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Item # E9LJ51H

Britax Marathon 70-G3 Convertible Car Seat - Waverly

Share Britax Marathon 70-G3 Convertible Car Seat - Waverly

Was $289.99
Save $90 31% Off

Other Options Available:

Coordinating Items
Britax Infant Positioning Insert
Britax Kick Mat (2 Pack)
Diono Ultra Mat
Diono Stow 'n Go
Include the Britax Marathon 70-G3 Convertible Car Seat - Waverly

Product weight: 19.5 lbs
Dimensions (WxHxD): 18.5 x 26 x 21"
Rear-facing capacity: 5-40 lbs
Forward-facing capacity: 20-70lbs
Height capacity: up to 49 inches

Base with SafeCell technology helps prevent child from propelling forward in case of impact. Side Impact Protection helps minimize the risk of injury in the event of a crash.
HUGS: provides resistance to forward movement in the event of a crash. High-density comfort foam provides an extra layer of padding to gently cushion your child.

Rear-Facing: 5 – 40 lbs, a standing height of 49 inches or less and seated shoulder height of 9 – 16.75 inches. Forward-Facing: 1 year & 20, up to 70 lbs, a standing height of 49 inches or less and a seat shoulder height of 12 – 16.75 inches.

EZ-Buckle System retains the harness buckle in a forward position and prevents the child from sitting on the buckle when boarding

Base with SafeCell Technology features SafeCells designed to compress in a crash, significantly lowering the center of gravity and counteracting the forward rotation of the child seat which normally propels the child toward the front seat.

Integrated Steel Bars strengthen the connection to the vehicle and reduce forward flexing of the child seat during a crash.

Energy-Absorbing Versa-Tether features a staged-release tether webbing to slow the forward movement, reducing the crash forces reaching the child, and a two-point attachment to minimize forward rotation while anchoring the top of the child seat.

Side Impact Protection comprised of deep side walls lined with energy-absorbing EPP foam distributes crash forces, shields from vehicle intrusion, and contains the head, neck and bodyTangle-Free, Five-Point Harness distributes crash forces across the strongest parts of the body and provides a secure fit

Harness Ultra Guard System (HUGS™) provides resistance to forward movement in the event of a crash

  • 70-pound Weight Capacity for safety and comfort as your child grows
  • Rear and Forward Facing Recline for child comfort and positioning
  • High Density Comfort Foam provides an extra layer of padding to gently cushion your child
  • Plush, Easy-Remove Cover with matching comfort pads and infant body pillow to provide extra comfort and easy cleaning without disassembling or uninstalling the child seat
  • Easy-Remove Cover allows easy cleaning without disassembling or uninstalling the car seat
  • Two Buckle Positions for your growing child
  • Infant Positioning Insert may be necessary for small infants to achieve a snug fit of the harness around your child (sold separately)
  • Quick-Adjust, No-Rethread Harness repositions the harness shoulder height without disassembling the harness straps
  • Premium Lower LATCH Connectors for a quick and simple installation featuring a push button for easy release
  • Built-in Lock-Offs ensure a snug lap and shoulder belt installation with minimal effort
  • Anti-Slip, Contoured Base grips and protects the vehicle seat while offering optimum vehicle fit
  • Harness Holders keep harness straps pulled to the sides when placing your child in the car seat
  • Certified for Aircraft Travel
  • Made in the USA with global components

Child Weight (lbs)Rear Facing: 5 - 40
Forward Facing: 1 year and 20, up to 70
Child Standing Height (in)49 or less
Child Seated Shoulder Height (in)Rear Facing: 9 - 16.75
Forward Facing: 12 - 16.75
Product Weight (lbs)19.5
Product Dimensions (in)18.5W x 26H x 21D
Seating Compartment Height (in)23.5
Seat Area Depth / Width (in)11 / 11
Shoulder Width (in)13
Harness Slot Heights (in)8.5 / 9.5 / 10.5 / 11.5 / 12.5 / 13.5 / 14.5 / 15.5 / 16.5 / 17.5
Buckle Strap Depths (in)5 / 7.5

Item # E9LJ51H

The MARATHON™ 70-G3 achieves revolutionary head safety through the use of BRITAX SafeCell™ Technology, Integrated Steel Bars, and Versa-Tether® that work together to minimize head excursion and reduce the risk of head injury during a frontal impact.
12 Reviews
83% (10)
17% (2)
0% (0)
0% (0)
0% (0)
100% Recommend this product (12 of 12 responses)
By Kelly
Phoenix, AZ
February 25, 2014
great product for best price
I researched this peoduct and was looking for the best price, albeebaby had this product for the3 price and the product also arrived quickly.
By Maryan Fine
Glenview, IL
January 8, 2014
Great company
Love the quick service and great prices.
By Debra
Coral Springs, Fl
September 13, 2013
My grandson loves this carseat
My 1 year old grandson loves to ride in his "cadillac" of carseats. Easy to adjust straps & very safe seat. He is able to ride in comfort & has not problem napping while we take care of errands.
Pros safe comfortable ease of use
Best UsesEveryday car use
By Julie
Lexington, KY
August 6, 2013
Britax is the Best!!!
Our little guy is now 10 months. He is 20lbs & 28in long. He fits beautifully in there with much room to grow. Right now we have him rear facing so I haven't seen what he would look like forward facing. But the seat does have three seat positions. We have a mini van and my husband can put the seat all the way back without the seat interferring with the carseat. This is our second child and we have only used Britax carseat/boosters. We love the safety, easy installation and comfort they provide.
ProsSafety, Safety, Safety. Easy to install. Easy to adjust. Easy to clean. Seems really comfortable. Room to grow.
Best UsesGreat for infants and up.
By karen barnes
May 9, 2013
I bought this for my grandson. Absolutely the BEST. I would recommend it to keep anyones precious little one safe.
This is an excellent product. Light and easy to carry. User friendly when putting in vehicle. Lots of padding, strong straps that click into place easily. Durable. Once I took this out of the box I could tell just by looking at it that it was what I needed to keep my grandson safe. This convertible car seat is definately worth the little bit of added expense.
By Amanda
Lake Norman, NC
May 6, 2013
Love it!
At first I was intimated by a you can do and learning just how to do it, but once I learned how it became a breeze. Granted my son still hates getting in it 90% of the time (he hates that with any carseat) he does seem to relax, sleep better, and cry less on longer trips!
ProsStrong and comforable. Well made.
ConsA little bulky
By brad
st pete, florida
April 18, 2013
Nice Seat
Very easy to set up and child likes the seat
By Pat Freeman
Belton, TX
April 15, 2013
Britax Marathon
Our granddaughter sits comfortably in this carseat. We are pleased with the soft strap covers and other safety features.
By Tim
Charleston, SC
February 19, 2013
Great Car Seat
My 11 month old loves this car seat. He was 4 weeks early and we had to purchase an infant care seat for the first couple months and recently switched to the Britax Marathon 70-G3 Convertible car seat. I love how it can expand to fit him as he grows. No complaints and Albee Baby has been great!
By Beth
Los angeles, CA
February 14, 2013
Britax car seat
We are the grandparents and we bought the seat for our granddaughter. She has only ridden in it so far and it was fine. The more we get to take her places, the more experience we will have with this car seat.
ProsLike the color and the look of it. My son-in-law put it in the car and it was an easy install as far as I could see.
ConsNothing to complain about yet.
By emily
fort worth, texas
October 19, 2012
very pleased
we moved my son to this seat when he was around 20 months (he had a little sister on the way who was taking his old car seat). we have only used it facing forward. It is bulky but seems super comfortable to him. Also, I LOVE how easily the straps adjust up and down. Occasionally I will have my niece with me but not my son. She is MUCH larger and 18 months old than him (90% 4 year old) but it is an easy adjustment to move the straps up to fit her.
Prossafety. padding. comfort. sturdy. cup holder NOW works (didn't when he was smaller). easy adjusting shoulder harness
Consbulky for passengers to ride beside
By Leslie
San Antonio, Texas
October 17, 2012
Great for my one year old
I have an 18 pound one year old and this seat has been very accommodating to his size. The pull out cushions should allow me to use this seat for years to come. Very happy.

1 Question & 1 Answer
from Archdale, NC asked:
January 29, 2014
Does this car seat require a base purchased separately?
1 Answers
A base will be included with the purchase of this car seat and base cannot detached from the seat.
Customer Service
on January 29, 2014

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