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Britax Marathon G4 Convertible Car Seat - Onyx

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Britax Marathon G4 Convertible Car Seat - Onyx - Britax  - Babies"R"Us
  • $289.99
  • $232.99
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  • +$59.99

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  • Gift wrap is not available for this item.

  • Product is not available for shipping internationally. (Details)

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Only $19.99 Britax 3-in-1 Car Seat Accessory Kit when you buy a select Britax Convertible or Harness-2-Booster Car Seat - (Details)
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Product Description

The BRITAX MARATHON™ convertible car seat is designed for children rear facing from 5 to 40 pounds and forward facing from 20 up to 65 pounds. The MARATHON achieves revolutionary head safety through the use of BRITAX SafeCell Technology® in the base, integrated steel bars, and energy absorbing Versa-Tether® that work together to minimize head excursion and reduce the risk of head injury during a frontal impact. The MARATHON also incorporates BRITAX Side Impact Protection, offers a no-rethread and quick-adjust five-point harness, multiple buckle and recline adjustments, and an easy-remove cover that also allows access to belt paths from the front of the seat. A head and body pillow is provided for extra comfort and infant positioning.

The Britax Marathon G4 Convertible Car Seat Features:

  • Base with SafeCell Technology®
  • Energy Absorbing Versa-Tether®
  • Side Impact Protection
  • Harness Ultra Guard System (HUGS™


Britax has been a pioneer in child passenger safety for more than 35 years, with a legacy of leadership in developing innovations that enhance the safety of child car seats and improve their ease of installation and use. Their uncompromising focus has made Britax the best-selling child seat in Europe and one of the brands most trusted by American parents and caregivers since entering the U.S. market in 1996.
This and all items from Britax are excluded from all promotions and discounts except where otherwise noted on product detail pages.

Features

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

Additional Info

286475

E406D5EE

652182711504

E9LQ91A

5 lbs

65 lbs

Convertible

Latch,Adjustable Head Support,5 Point Harness

Yes

4

22.4 pounds

29.8 x 19.4 x 18.8

How to Get It


  • This item can be shipped to the entire United States including Alaska, Hawaii, and all U.S. territories including Puerto Rico
  • This item can also be shipped to APO/FPO addresses and to P.O. Boxes in all 50 states
  • Due to shipping restrictions, Ship Charges will be separate from other items in your order
  • This item will ship by itself


  • This item may be shipped via Standard Shipping, Expedited Shipping or Express Shipping
  • Please Note: Some addresses are eligible for Standard Shipping only (APO/FPO, P.O. Boxes, U.S. Territories and Puerto Rico)

(learn more):

  • This item is sold online only (not sold in stores)
  • Orders placed for Store Pickup will receive online pricing and promotions
  • In-stock status is approximate and may not reflect recent sales
  • Not all items are carried at all stores. Please click the "Select a store" link to check product availability

Customer Reviews Summary & Ask a question

Average Customer Rating:

by PowerReviews
Britax Marathon G4 Convertible Car Seat - Onyx
 
4.6

(based on 14 reviews)

Ratings Distribution

  • 5 Stars

     

    (11)

  • 4 Stars

     

    (2)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (0)

93%

of respondents would recommend this to a friend.

Most Helpful Positive Review

 

Love it!

We chose this particular model because it was slimmer that the others and the head wing was not large where it would block our childrens' window view. The installation in the car was...Read complete review

We chose this particular model because it was slimmer that the others and the head wing was not large where it would block our childrens' window view. The installation in the car was easy. And my son seems to be fine in the seat. My in laws had purchased a different car seat for their car but ended up returning it because the seat did not feel secure when installed. So I recommended for them to purchase the same one we had, the Britax Marathon. And they feel much better having my son in their car.

VS

Most Helpful Critical Review

 

Not happy with appearance of packaging !

Hopefully when it is opened at the shower the $300 car seat will be ok- UPS was very rough with the box - future gifts will be picked up at the store or not...Read complete review

Hopefully when it is opened at the shower the $300 car seat will be ok- UPS was very rough with the box - future gifts will be picked up at the store or not purchased. Can't believe it left a warehouse in this condition .

Reviewed by 14 customers

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(0 of 1 customers found this review helpful)

 
2.0

Not happy with appearance of packaging !

By Grandma

from Northlake IL

About Me Grandparent

Verified Buyer

Pros

    Cons

      Best Uses

        Comments about Britax Marathon G4 Convertible Car Seat - Onyx:

        Hopefully when it is opened at the shower the $300 car seat will be ok- UPS was very rough with the box - future gifts will be picked up at the store or not purchased. Can't believe it left a warehouse in this condition .

        Comment on this review

        (0 of 1 customers found this review helpful)

         
        5.0

        Great safe easy to install car seat

        By Chris

        from Undisclosed

        Comments about Britax Marathon G4 Convertible Car Seat - Onyx:

        Great car seat. Very happy with the fabric, ease of use and ease of cleaning.

        Comment on this review

         
        5.0

        WORKS GREAT!

        By dalw

        from Lake Havasu City, AZ, United States

        Comments about Britax Marathon G4 Convertible Car Seat - Onyx:

        I am happy with this product. The only thing I would change is the ability to loosen the straps when I go to take my grandson out. It is hard to get my figure in the place and to find the lever however I think maybe that is because you don't want a older child to loosen his straps?

        Comment on this review

        (1 of 1 customers found this review helpful)

         
        5.0

        Love it!

        By SueMo

        from Poway, CA, United States

        Comments about Britax Marathon G4 Convertible Car Seat - Onyx:

        We chose this particular model because it was slimmer that the others and the head wing was not large where it would block our childrens' window view. The installation in the car was easy. And my son seems to be fine in the seat. My in laws had purchased a different car seat for their car but ended up returning it because the seat did not feel secure when installed. So I recommended for them to purchase the same one we had, the Britax Marathon. And they feel much better having my son in their car.

        Comment on this review

         
        5.0

        ESTUPENDO!!!

        By ALV78

        from USA

        Comments about Britax Marathon G4 Convertible Car Seat - Onyx:

        am happy for my baby,now is safety in Britax Marathon

        Comment on this review

         
        5.0

        Comfortable

        By Mom143

        from Palm Springs, CA, United States

        Comments about Britax Marathon G4 Convertible Car Seat - Onyx:

        I bought this for my 9 month old son who had outgrown his infant car seat. He seems much happier with the space he now has, as well as the breathable fabric. He would always end up sweaty with his infant car seat, and with the Britax we haven't had that issue.

        Comment on this review

         
        5.0

        We love Britax

        By SallySunshine

        from Evanston, WY, United States

        Comments about Britax Marathon G4 Convertible Car Seat - Onyx:

        I loved the no tangle straps feature which effortlessly adjust for just the right fit. I have always been impressed by the steel re-enforced frame and the comfort features of Britax Marathon. Its like the luxury sedan of car seats. Installation is a breeze.

        Comment on this review

         
        4.0

        easy set up

        By lanirose2014

        from Caledonia, MN, United States

        Comments about Britax Marathon G4 Convertible Car Seat - Onyx:

        We got it all set up and installed in minutes. Super easy

        Comment on this review

         
        5.0

        Roomy

        By TMomma

        from Augusta, GA

        Comments about Britax Marathon G4 Convertible Car Seat - Onyx:

        This seat offered my toddler the much needed leg/head room with added comfort. The additional cup holder and net bag on the side is a great compliment as well. On the other hand, I don't quite understand the reason for the added removable cushion on the back of the seat near the children s rear end. Since it is removable and a hassle to deal with I just took it out.

        Comment on this review

         
        5.0

        Another great Britax product!

        By mamaK

        from Seattle, WA

        Comments about Britax Marathon G4 Convertible Car Seat - Onyx:

        This is our 3rd Britax purchase (we also have the Bob Revolution by Britax and the infant car seat) and after 2 months we're just as happy with it as the others. Britax is very thorough with the safety features of their products but they also go a step further. Little conveniences like the velcro that holds the straps out of the way when you put your baby in the seat are fabulous. It's very easy to get our baby in and out of the seat and he seems very comfortable in it on short and long trips.

        Comment on this review

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