Britax Marathon 70-G3 Convertible Car Seat - Waverly

This item is discontinued.
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.
Product Reviews
out of 5.0
12 Reviews
Ratings Snapshot
of Reviewers
Phoenix, AZ
Verified Buyer
great product for best price
February 25, 2014
I researched this peoduct and was looking for the best price, albeebaby had this product for the3 price and the product also arrived quickly.
Maryan F.
Glenview, IL
Verified Buyer
Great company
January 8, 2014
Love the quick service and great prices.
Coral Springs, Fl
Verified Buyer
My grandson loves this carseat
September 13, 2013
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.
  • safe
  • comfortable
  • ease of use
Best Uses
  • Everyday car use
Lexington, KY
Verified Buyer
Britax is the Best!!!
August 6, 2013
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.
  • Safety, Safety, Safety. Easy to install. Easy to adjust. Easy to clean. Seems really comfortable. Room to grow.
Best Uses
  • Great for infants and up.
  • None
karen b.
Verified Buyer
I bought this for my grandson. Absolutely the BEST. I would recommend it to keep anyones precious little one safe.
May 9, 2013
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.
  • NONE.
Lake Norman, NC
Verified Buyer
Love it!
May 6, 2013
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!
  • Strong and comforable. Well made.
  • A little bulky
st pete, florida
Verified Buyer
Nice Seat
April 18, 2013
Very easy to set up and child likes the seat
Pat F.
Belton, TX
Verified Buyer
Britax Marathon
April 15, 2013
Our granddaughter sits comfortably in this carseat. We are pleased with the soft strap covers and other safety features.
Charleston, SC
Verified Buyer
Great Car Seat
February 19, 2013
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!
Los angeles, CA
Verified Buyer
Britax car seat
February 14, 2013
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.
  • Like 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.
  • Nothing to complain about yet.
fort worth, texas
very pleased
October 19, 2012
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.
  • safety. padding. comfort. sturdy. cup holder NOW works (didn't when he was smaller). easy adjusting shoulder harness
  • bulky for passengers to ride beside
San Antonio, Texas
Verified Buyer
Great for my one year old
October 17, 2012
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.
Customer Q&A
1 Question & 1 Answer
from Archdale, NC asked:
January 29, 2014
Does this car seat require a base purchased separately?
A base will be included with the purchase of this car seat and base cannot detached from the seat.
Submitted by: Customer Service on January 29, 2014