Britax Marathon G4 Convertible Car Seat, Cowmooflage

4.5 stars
By: Britax
Walmart #: 552121807
List price $289.99  (You save $57.99)
FREE shipping
Care plan (optional):
Sold by

Click on these options to see if you can get it by Christmas

Showing options for 07095
Data unavailable
Data unavailable
Data unavailable
Data unavailable
This item is not available for pickup or at any of the Walmarts within 50 miles of your location.
1 more seller from $232.00
| Learn more
  • Rear-facing for children 5 to 40 lbs
  • Forward-facing for children 20 to 65 lbs
  • Side Impact Protection
  • Gifting note: This item ships in the manufacturer's original packaging. If intended as a gift, the packaging may reveal the contents.

    About this item

    The Britax Marathon G4 Convertible Car Seat is designed for children rear facing from five to 40 pounds and forward-facing from 20 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 Britax Marathon G4 Convertible Car Seat 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 infant pillow is provided for extra comfort and infant positioning.

    Britax Marathon G4 Convertible Car Seat, Cowmooflage:

    • The Britax Marathon G4 Convertible Car Seat is rear-facing for children 5 to 40 lbs; standing height: 49" or less, seated shoulder height: 9"-16.75"
    • Forward-facing for children 20 to 65 lbs; standing height: 49" or less, seated shoulder height: 12"-16.75"
    • Tangle-free, 5-point harness distributes crash forces across the strongest parts of the body and provides a secure fit
    • Quick-adjust harness repositions the harness shoulder height without disassembling the harness straps on the child convertible car seat
    • EZ-buckle system and harness holders keep harness straps out of the way when placing your child in the car seat
    • Harness Ultra Guard System (HUGS) provides resistance to forward movement in the event of a crash
    • 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
    • The Onyx Britax Marathon Convertible Car Seat energy absorbing Versa-Tether features a staged-release tether webbing to slow the forward movement, reducing the crash forces reaching the child
    • 2-point attachment to minimize forward rotation while anchoring the top of the child seat
    • Infant positioning pillow offers extra comfort while achieving proper harness fit for small infants
    • High-density comfort foam provides an extra layer of padding to gently cushion your child
    • Rear- and forward-facing recline for child comfort and positioning
    • 2 buckle positions for your growing child
    • 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
    • The Onyx Britax Marathon Convertible Car Seat has premium lower LATCH Connectors for a quick and simple installation featuring a push button for easy release
    • Assembled weight: 19.5 lbs
    • Child convertible car seat case 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

    Questions about product recalls?
    Items that are a part of a recall are removed from the site, and are no longer available for purchase. These items include items only, not those of Marketplace sellers. Customers who have purchased a recalled item will be notified by email or by letter sent to the address given at the time of purchase. For complete recall information, go to Walmart Recalls.

    See all Britax baby carriers, car seats and strollers on You can shop Britax strollers, carriers and seats by price, category or rating.


    Car Seat Type: Convertible Car Seats
    Primary Color: Black
    Car Seat Child Height Max: 49 inches
    Car Seat Child Weight Max: 65 pounds
    Car Seat Child Weight Min: 5 pounds
    Model No.: E9LQ91Q
    Shipping Weight (in pounds): 22.9
    Product in Inches (L x W x H): 21.0 x 18.5 x 26.0
    Assembled in Country of Origin: USA and Imported
    Origin of Components: Imported
    Walmart No.: 552121807

    Customer reviews

    Customer Reviews | 119 reviews | 4.6 out of 5

    4.5 stars

    119 reviews | 4.6 out of 5

    5 stars
    4 stars
    3 stars
    2 stars
    1 stars
    Would recommend to a friend



    Great Product

    Customer review by Aubiegirl98

    5.0 stars by Aubiegirl98

    My granddaughter is a much happier camper now that she can face forward. The car seat is very cushiony and the straps fit perfectly. I love that it has so many safety options. I definitely would recommend this to friends and family.

    Was this review helpful? (0) (1)
    Thank you! You have successfully submitted feedback for this review.
    Would recommend to a friend? Yes
    Verified purchaser
    Verified purchaser
    Customer has been confirmed to have purchased the item from Walmart.
    Wonderful Product

    Customer review by Momto2

    5.0 stars by Momto2

    Bought for our youngest when he outgrew his infant carrier. Rides in this car seat with no problems. The HUGS can be a bit bothersome at times when trying to buckle my son in but all in all, have been very happy with this product and my son is too!

    Denver, CO, United States
    Would recommend to a friend? Yes
    Marathon CS

    Customer review by MarathonCSowner

    5.0 stars by MarathonCSowner

    I was recently in a front-end car accident in which the car (2006 Honda Civic) was totaled. My son (4 years old, 44 lbs.) was front-facing in the Marathon CS and sustained no injuries at all. He was up running around after the accident and complained of no pain in the days following. He only had minor seatbelt burn near his neck. It has been a week, and I am still in bed suffering from severe muscle spams and pain/whiplash. I am very pleased with this car seat and how it protected my son in the wreck. It is also very easy to install, easy to remove the covers to wash, fairly light weight. I highly recommend this seat. My son has used it since he outgrew the infant seat around age 1.

    Would recommend to a friend? Yes
    1-3 of 119 total reviews See all

    Customer Q&A

    Have questions? Get answers from experts and customers who own this product.

    Ask a question

    If you would like to share feedback with us about pricing, delivery or other customer service issues, please contact customer service directly.

    Q&A tips and guidelines

    Q&A Exchange Guidelines

    When writing your question or answer, please follow these guidelines:

    • Do: Make sure your question is directly related to the product
    • Do: Be specific and provide as many details as possible
    • Do: Include the model number (if applicable)
    • Do: Write your question in English
    • Do Not: Include personal information (such as your full name)
    • All submitted questions and answers are subject to the terms set forth in our Terms and Conditions

    We reserve the right not to post your question or answer if it contains any of the following:

    • Any information not related to the actual merchandise or topic
    • Obscenities, discriminatory language or other language not suitable for a public forum
    • Advertisements or “spam” content
    • Email addresses, physical addresses or other forms of contact information
    • Critical or spiteful comments on other questions or answers posted on the page or their authors
    • Any imagery that demonstrates incorrect use of the merchandise
    • Anything that Walmart deems to be inappropriate, at Walmart's discretion

    Provide as many details as possible, including the model number (if applicable).

    Remember: Don’t include personal information (such as your full name).

    Preview Question

    Walmart does not sponsor, recommend or endorse any third party product or service, or any customer ideas or advice.

    Thank you.

    Questions will be checked against our question guidelines and posted within five to seven business days.

    Policies & Plans

    Warranty Plan

    Walmart Product Care Plans
    A limited product warranty is included free for most items. With an optional Walmart Care Plan you can enhance the manufacturer's coverage from the date of purchase . Walmart Product Care Plans cover 100% of the cost for repair or replacement, including shipping charges for the exchange.

    We'll show you Care Plan options and pricing at checkout if applicable, or go to for more information.

    Product warranty: 1 year See details

    Supplier Warranty: 1 Year Limited Manufacturer Warranty.
    Did you buy this in a Walmart store?  Get a warranty for it here.

    Product Recommendations

    Your recently viewed items

    Clear this list