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Britax Marathon ClickTight Convertible Car Seat - Twilight

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Item # E1A386B


Rear-facing: 5-40 lbs
Forward-facing: 20-65 lbs
Height capacity: 49 inches
Dimensions (in): 18.5 W x 23.5 H x 23 D

What's Included: Car Seat Only


ClickTight Installation System

Easy, secure installation in 3 steps:
1: Turn the ClickTight Release
2: Thread and connect the vehicle seat belt
3: Click it closed!

Impact Absorbing Base

Compresses to absorb crash energy and counteract forward movement, keeping your child clear from the seat in front of them.

Side Impact Protection

Complete Side Impact Protection surrounds your child in a deep protective shell designed to absorb crash forces and shield your child from debris.

7-Position Recline

Adjusts for your child's comfort while ensuring the best installation angle for your vehicle.

The Marathon ClickTight Convertible Car Seat is an excellent choice for getting your family where they need to go safely, comfortably and with so much ease. With the ClickTight Installation System, now everyone can install the car seat securely and confidently by just buckling the seat belt. You simply open the front of the car seat, buckle the seat belt across the belt path and then click the seat shut for a proper installation every time. SafeCell Impact Protection surrounds your child in safety components that work together to protect well beyond the established federal safety standards. And Complete Side Impact Protection shields your little one in a deep protective shell designed to absorb crash forces and protect from debris.

A car seat works best when it provides the right fit so the Marathon ClickTight comes with the Quick-Adjust, 12-Postion Harness and 2-Position Buckle to keep up with your growing child. Plush Foam Padding provides premium comfort at every touch point and there are even 7 recline positions with an Automatic Level Indicator so you can adjust to ensure the best installation angle for your vehicle.

The Marathon ClickTight converts from a rear-facing position (for babies 5-40 lbs.) to a forward-facing position (for children 20-65 lbs.) and has been carefully designed to keep your child safe and you free from worry along the way. So click them in, give them a kiss and go with confidence.

Product Features

ClickTight Installation System ensures that everyone can install the car seat securely and confidently by just buckling the seat belt.

SafeCell Impact Protection is an integrated system of safety components that work together to protect your child well beyond the federal safety standards. Including an Impact Absorbing Base, Tether and Harness, an Impact Stabilizing Steel Frame, and Complete Side Impact Protection. SafeCell means your child is surrounded in best-in-class safety.

SafeCell Complete Side Impact Protection surrounds your child in a deep protective shell designed to absorb crash forces and shield your child from debris.

  • SafeCell Impact Absorbing Base compresses to absorb crash energy and counteract forward movement keeping your child clear from the seat in front of them.
  • SafeCell Impact Stabilizing Steel Frame gives you peace of mind knowing there is strength where you want it most, through the spine of the car seat reducing forward flex and at the connection points to the vehicle.
  • SafeCell Impact Absorbing Tether minimizes potential seat rotation with our unique two-strap design and slows forward movement with our patented rows of stitching that ?give-way? one at a time.
  • SafeCell Impact Absorbing Harness slows forward movement in the event of a crash.
  • 7-Position Recline with Automatic Level Indicator adjusts for your child?s comfort while ensuring the best installation angle for your vehicle.
  • Plush Foam Padding in the cover, buckle pad, shoulder pads and removable pillow surrounds your child in comfort at every touch point.
  • EZ-Buckle System keeps buckles and straps out of your way when placing your child in the car seat.
  • Easy-Remove Cover for cleaning convenience.
  • Quick-Adjust, 12-Position Harness and 2-Position Buckle allows you to easily move the harness upward and buckle outward for a comfortable, secure fit as your child grows.
  • Certified for Aircraft Travel
  • Made in the USA with global components

Complete Specifications:

  • Child Weight (lbs) Rear Facing: 5 - 40 , Forward Facing: 1 year and 20, up to 65
  • Child Standing Height (in) 49 or less
  • Child Seated Shoulder Height (in) 16.95 or less
  • Product Weight (lbs) 28.5
  • Product Dimensions (in) 18.5W x 23.5H x 23D
  • Seating Compartment Height (in) 23.75
  • Seat Area Depth / Width (in) 10.5 / 11.5
  • Shoulder Width (in) 16
  • Harness Slot Heights (in) 8.35 to 17.7 (.85" increments), 12 positions
  • Buckle Strap Depths (in) 5.25 / 7

Review Summary
342 Reviews
78% (267)
14% (49)
2% (8)
2% (8)
3% (10)
93% Recommend this product (317 of 342 responses)
By crystal
Smithville, Mississippi
Quality is the best
September 29, 2019
We love this carseat
ProsEasy to install and get child in and out rear facing
By Cmj
Quality matters!
September 19, 2019
We love Britax due to safety features and quality. Overall, the seat is great. We like it‚€™s multiple recline positions, cushy seat pads, and smooth tightening harness. The seat is heavy and is a bit of a head scratcher to install at first. Once figured out, it wasn‚€™t too bad.
By Naketa
Damascus, Oregon
Easy to install
September 14, 2019
I know my baby is safe and this installs in minutes
ProsQuick install Easy to take apart and wash Comfortable Easy to adjust
ConsNo cup holders Material falls down from top of seat
By Katie
Marrero, Louisiana
Awesome product
August 14, 2019
I love everything about britax this seat is easy to install and use
ProsVery easy install
ConsHeavy (but still worth it)
By Gracie M.
Austin, TX
Sturdy, hides stains, and easy to install!
July 8, 2019
Hides stains, spills, and easy to install. I frequently switch between cars with grand parents etc...
ProsDurable, safe, and comfortable for the kiddos. Our 5 year old still sits in it, so definitely worth the price, considering the usage term.
ConsHeavy, but doesn't matter, since it just stays in the car.
By Bridget
Louisville, Kentucky
ClickTight is the best!
July 5, 2019
I LOVE ClickTight seats! I have three of them in my car, and when my fourth babe is old enough, he'll be in one, too! They're super easy to install, and I know I'm getting secure fit every time. I don't mind moving them since they're so easy to install!
By Stacie
Fort Irwin, CA
Works great
June 16, 2019
We have 2 Britax convertible car seats and just ordered another one. We've had no issues so far and they keep our kids safe. We chose these because of the safety ratings and recommendations.
By Olga
Chatsworth, CALIFORNIA
Great car seat
May 14, 2019
Our baby loves this car seat, it's very roomy. We liked it so much, we bought another one for our second car.
By Daph
New Orleans
Excellent car seat!
April 24, 2019
We bought this car seat to install it rear facing in my Mazda 2 (super small car) and it fits perfectly! It seems like we will be able to rear face our baby for as long as we want to. Very easy to install and doesn't take up a lot of space.
* This product review was collected by the manufacturer.
By Mimi
Austin, TX
Perfect and so pretty!
April 4, 2019
We have had Britax Marathon car seats in the past, but have found a new love with this click- tight model. So easy to install, and the Ollie Polkadot pattern is so pretty for our little granddaughter. It fits in my car perfectly!
By Momma M.
Simple safe installation
March 14, 2019
This car seat not only looks great but it‚€™s very easy to install. The clicktight functionality gives me the piece of mind that the seat is installed properly. No more climbing into car seats to make sure they are secured tightly.
ProsEasy install
Best UsesEveryday same vehicle carseat
By Kelsey
March 9, 2019
I ordered this car seat from Albee baby because it was $50.00 cheaper than ordering it from the brand maker. I saved money, got free shipping, and received the car seat three days later! I will definitely be using Albee baby more!
By Exhausted M.
March 4, 2019
I bought this because my niece was in a Britax convertible years ago and my older daughter has 2 Britax forward facing seats. I LOVE the Britax Frontier with Click Tight, so I knew I'd want to get a convertible car seat with ClickTight for my baby. BUT this seat is SOO heavy it's hard to move (which I try not to have to do but it's the only seat we own since it was so expensive). The ClickTight is not easy like with the Frontier it is extremely difficult I can barely get it closed I have to litterally put my knee on it and press with my body weight and wiggle to make it click (and most times it takes a few tries of doing this). Getting a car seat properly installed can be difficult and exhausting and I thought the Marathon with ClickTight would help me not have so much trouble but that is NOT the case it is just as difficult (in some ways even more difficult) than other seats.
It does have a no rethread harness but the straps on mine get uneven when you loosen and tighten them and you have to take the seat out and loosen them all the way and tighten them all the way a few times to make them get back to even and then REINSTALL the seat (which is a huge pain) and defeats the purpose of the no rethread harness for me because it's much harder to do that than to rethread a car seat harness.
and lastly there are no cup holders which is not a big deal but had I known it was going to be so difficult to use I would NOT have bought it and would have opted instead for a seat with more features (such as cup holders)
* This product review was collected by the manufacturer.
By Mama 5.
So disappointed in the color options!!
March 3, 2019
I'm a LONG time Britax car seat and specifically a Marathon user. I'm looking to purchase our 6th Britax convertible car seat for our youngest baby girl, and I'm soooo disappointed in the color options for all of the Britax convertible car seats. I've never had a problem finding a "girly" color option for my girls, but that no longer exists. This seems like a MASSIVE oversight/poor decision. I don't know any little girls who wouldn't pick something like pink or purple over gray and black. I've loved all of our Britax car seats, but because of something as silly as color, I'm planning to switch brands.
* This product review was collected by the manufacturer.
By DJ99
Hubbard Ohio
Great features
December 14, 2018
I bought one last year 2017! Easy install, great material, and just amazing! We had to get a replacement and they sent that out within two days! Great customer service as well
* This product review was collected by the manufacturer.
By TZ28
December 6, 2018
I bought this for my 4 mo daughter for Christmas. She was previously using the B-Agile Infant car seat and seemed uncomfortable. This car seat is awesome, seems super comfy for her. Riding in style!
* This product review was collected by the manufacturer.
By Grammy r.
New Milford
Cadillac of car seats
December 4, 2018
Very happy with it - cozy and snuggly and comfy and protective
* This product review was collected by the manufacturer.
By Jenn
Everett, Washington
Love this car seat!!
December 2, 2018
My daughter is so much happier in her new car seat! She‚€™s comfortable, safe and she can see out the window, which keeps her happy! I love how easy it was to install! I feel very confident in it being installed correctly because it was so straightforward and easy! I also feel confident in its safety. I bought one to start with just to see if we liked it and bought another one shortly after because it was obvious my daughter liked it. The price on this website was the best price I found and if you use Ebates, you can get cash back!
By Cindy
Exactly what I wanted
November 26, 2018
Easy installation, heavy duty frame, and comfortable for the little one. I am very pleased with the purchase.
ProsEasy installation
ConsDoesn?t allow my front seat much room
By Cecilia
Bakersfield, California
Comfortable and stylish
November 23, 2018
My daughter enjoys sitting in her car seat. This was a great purchase with a stylish look. This product feels and is a sturdy item. Easy to install. And Removing the material for washing was super easy. Although the car seat is on the heavy side.
ProsWell made
ConsHeavy car seat, and wide
By John
Franklin, Tennessee
Easy install
November 22, 2018
easy install - can even help install it with 1 hand
ProsEase of install
By Grandma
Great Design
November 16, 2018
Love this seat. It straps solidly to the car seat.
Adjusting the straps is intuitive and it‚€™s easy to get my grandchild in and out. The quality and ease of use are worth the price. Note that this seat is quite heavy. It would be difficult/impossible to travel by air with it.
By Kelly
Great Carseat!
November 14, 2018
Great carseat - had been shopping around for a good price on this exact car seat!
By R&C
Arlington, WA
Love this car seat!
November 8, 2018
My daughter is very happy and comfortable in this seat and I also feel it‚€™s very secure and safe easy to install and get her in and out ūŸ˜Š
By Brittany
Lake Geneva, Wisconsin
November 6, 2018
Super fast shipping for one! Just used for the first time yesterday my daughter hated her infant seat once it started getting to heavy I decided to buy this. She passed out instantly has so much room and very easy to install!! Love it.
By Nicole
Slaughter, Louisiana
Love Britax
November 4, 2018
I have always bough Britax car seats and I‚€™m never disappointed!
Albany NY
Satisfied Customer
October 19, 2018
Love the car seat. Great experience shopping with Albee. I would definitely recommend. They had the car seat I wanted at the best price.
By Court240
Gastonia Nc
Excellent car seat
October 17, 2018
This makes the 6th britax seat our family has used since 2012. Not one of our seats has ever disappointed and so far this one is great too. The new click-tight system is super easy to install. The clock tight make it feel so tight and secure. The fabric is so soft, sturdy, comfortable, and will be easy to wipe clean. I like the indicator on the side to show the correct incline. The tilt is great to help keep baby's head from hanging down. Our original britax purchase from 2012 is still in great condition so I only look for this seat to hold up just as well since the fabric quality and technology seem to be improving with every seat. We also have 2 strollers that have held up great after several years of use. I will continue to purchase britax products
* This product review was collected by the manufacturer.
By Josselyn
The best Car Seat Hands Down!
October 16, 2018
I have bought many car seats and this is the first one that I can get tight in my vehicle. All the others seem loose on leather seats. I love the click tight option b/c it is fast and safe. I will now only buy these car seats moving forward. If you are contemplating buying this seat. DO IT !
Prosclick tight
By Marie
Las Vegas, NV
Great car seat
October 14, 2018
Very sturdy and comfortable.
ProsSturdy and comfortable
By Muditha
Garden Grove, California
look and feel is great
October 14, 2018
high quality materials. Nice and comfy looking finish.
Proseasy to attach
Consbit big for small cars
By Melissa D.
It's a looker!
October 10, 2018
I liked how easy they click tight system works...... well it does take quite a bit of pressure to close; however. Once locked, the seat is really secure in car. I bought this for grandkids and expect it to go through many stages. It is very durable; a real quality product. The red color blew me over. I couldn't pass up.
By Christinabh
San Diego, CA
Extended rear-facing 5-year-old approves
October 4, 2018
My son is a small 5-year-old. He's 31 pounds and 42" tall. I want to keep him rear-facing as long as possible (it's recommended to keep kiddos rear-facing until they grow out of the requirements for their individual car seat) and the Britax Marathon Click Tight allows US to do so! I was able to safely and properly install this seat in my 2017 Ford Explorer behind the driver seat thanks to the 7-position recline and built-in level indicator (genius!!). I love the no-rethread harness and Click Tight installation, too! The material on the dual comfort Marathon is perfect for my active little guy. He's often getting in the car after running around at school, soccer, or playing and the last thing he wants to do is stay warm! The grey fabric (where the majority of his body sits in the seat) allows for ventilation and the black fabric (behind his head - again, genius!) wicks away the moisture so he's comfy when he gets in the car and while on-the-go! Speaking of comfort, he has no problem or complaints about sitting "criss-cross applesauce" while in his seat as he has plenty of hip space while in the seat to allow for it ergonomically. He's also 5, so we have conversations about how riding facing backward is safest. It's easy for him to climb in and out of the seat himself and the buckling him is easier than when he was an infant! Thanks, Britax, for making a seat that can accommodate extended rear-facing easily, comfortably, and safely.
* This product review was collected by the manufacturer.
By Genie
good carseat
October 2, 2018
I had two carseats for my twins. Good quality and fast delivery.
By Danielle
Dallas, Texas
Checks all the boxes for a Convertible Car Seat!
September 19, 2018
This is my favorite of all of our car seats, and I will be buy more when our 2nd is ready for a convertible. (1) ClickTight installation is a breeze, we install weekly in our nanny's car and I have it down to where it takes minutes. (2) No Re-thread harness works perfectly. When you are watching your child's height versus three different car seats this really is necessary to be confident they have the best and safest fit. (3) Fits all our cars. We install in a SUV and two small sedans without issue.
ProsRated highly by Consumer Reports for safety, ClickTight install is simple, No-rethread harness works well
ConsMust adjust recline and then install, the first time installing in each car may require trial and error while you figure out the right recline. The button on the side of our Nuna RAVA is easier for this.
By Drew
Clinton, Ohio
September 17, 2018
This clicktight option is amazing!! makes installing a breeze!!
By Nathan
Morris, Illinois
Beautiful and Well Designed Car Seat
September 16, 2018
This car seat is wonderful. It looks great, very easy to use, and my child looks very cozy when riding in it! Quick installation into vehicle makes it painless if you have to switch it from vehicle to vehicle. The safety restraint system is easy to use so your child won‚€™t get mad at you when you are trying to fasten them in!
ProsDesign Cost Construction Brand Safety
New Jersey
Britax Marathon Car sears click & go
September 7, 2018
The Britax click and go car seat is so easy to install. As a grandparent, I can easily take the seat in and out of my car without any help. The seat padding is comfortable and the seat is designed for safety. Albee has not only the best price but quick delivery. I recommend the seat and purchasing at Albee.
By kristofer
pawtucket, Rhode Island
Awsome/Safe/Great Price
September 2, 2018
This is an amazing seat. One of the easiest installs out there. Super comfortable and safe!
By Kim G.
Philadelphia, PA
So easy to install
September 2, 2018
I was skeptical about how simple installing the Britax Marathons Clicktight would be, but it quickly exceed my expectations! It was installed in minutes.
By Danielle
Falls Church, VA
Love the Marathon and ClickTight!
August 31, 2018
This is our second Marathon car seat. We loved our first and when our son outgrew the infant car seat, we knew we wanted another Britax. We like that the straps don't get tangled. can be placed/held to the side when getting the child in and out, and now we love the ease of installation with CickTight. He seems very comfortable in the seat and I really can't say enough about how easy it is to get him in and out. We had another brand for our daughter and the straps were constantly getting hung up or tangled and it was really difficult to tighten the straps once she was in, particularly when it was rear facing. We have none of those issues with the Marathon. I highly recommend this car seat and the price is unbeatable for all the options and safety features.
By Dana
Lafayette, LA
Very sturdy and well made
August 18, 2018
The only reason I didnt give 5 stars is because of the weight. Not a good choice if you will be traveling or moving the car seat regularly. Otherwise, it seems to be much sturdier than our previous car seats. Very easy to install and adjust.
By Ashley
Fantastic seat
August 17, 2018
We bought 3 to replace carseats that were involved in an accident. We absolutely love them! The clicktight feature is so easy to use and make install a breeze. With having 5 children we are very familiar with installing carseats but this seat has made it so much easier and quicker to move the around. They are also slim enough so easily fit 3 across in our Odyssey. Love love love !
By Jan
Seattle, WA
Excellent product. Fits in an older subaru, which are not easy fits. HAPPY.
August 17, 2018
Thank you force the great price on this excellent car seat. Easy to install. Excellent safety reviews. A grandmother could not ask for more.

Thank you Albee Baby
ProsThis seat works in a 2000 Subaru Outback which are notorious for being difficult to stabilize a car seat. Albee Baby offered a great price, with free long distance shipping.
By Antoinette
Chicago, IL
Quality product
August 13, 2018
The safety touted by this model was my main reason for purchasing this seat. I am adopting a little boy so I don't need any infant seat as he is already 20 lbs. I was happy with the color too - red is auspicious in Chinese culture. This is the perfect fit for our son.
Best UsesPrimary car seat
By Nancy
Excellent seat
August 4, 2018
My daughter has this seat for her daughter. I bought this one for her son. It is very easy to move from car to car. My grand daughter finds it to be quite comfortable.
ProsEasy to move car to car.
By Sara
A favorite
August 4, 2018
We recently switched from our daughter‚€™s infant car seat to this one. She‚€™s not a fan of traveling, but so far seems to love this seat. It sits up higher than her infant seat and she can see more now, plus the seat is very plush and comfortable, so I think it is definitely a better ride (upgrade) for her. The install is simple and we like the reclining positions, not to mention the safety features. Glad this will grow with her and get good use.
By Jess
August 2, 2018
I love this car seat for my toddler. Very spacious, yet when I buckle her in, I know she‚€™s safely buckled in. It is heavy, but overall very happy with my purchase.
ProsSafe, toddler loves it.
By Kimberly
Leonard, Michigan
August 2, 2018
I Love Love Love this car seat ! Very easy to install , comfortable and above all safe! This car seat cannot be used in 2017 Ford Explorer or truck due to the inflatable seatbelt , I spoke to britax directly for about 30 min and they confirmed. We put it in another vehicle & it s fantastic!
By Kat
Very happy
August 2, 2018
I was very pleased with this car seat. We had a chicco next fit and were getting this seat as a second seat. I actually liked this one better so made the next fit my secondary seat (due to the bucket design the Britax was easier to get my rear facing almost 2 year old into) my son is 23 months 23 lbs and 25th percentile for height. I plan to rearface him until 3.
ProsInstallation using click tight was super easy. Seat feels very plush and my son seems comfortable in it. I was able to fit 3 across in my Honda Odyssey (Britax pioneer in high back booster mode and a Graco low back on either side of the marathon). My son in the high back pioneer (bulky seat) can easily buckle himself in.
Consthe installations instructions confused me a bit and I thought I was suppose to lock the seat belt before doing the click tight. After you tubing the install I can get a perfect instal in minutes in any position in my van. The other problem I am having is the cover slipping off and exposing the foam. A friend of mine with a similar Britax seat has the same issue except her two year old is picking at the foam. Luckily mine hasn?t noticed and I cover mine as soon as I see it has slipped.

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