Britax Marathon (G4.1) Convertible Car Seat Onyx - Britax - Babies "R" Us
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Britax Marathon (G4.1) Convertible Car Seat Onyx

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Britax Marathon (G4.1) Convertible Car Seat Onyx - Britax  - Babies"R"Us
Britax Marathon (G4.1) Convertible Car Seat Onyx - Britax  - Babies"R"Us
Britax Marathon (G4.1) Convertible Car Seat Onyx - Britax  - Babies"R"Us
  • $289.99
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Britax Marathon Convertible Car Seat - Onyx

The Britax Marathon Convertible Car Seat in the Onyx style installs inside your vehicle with easy-on/off LATCH connectors. To detach the seat from your vehicle, simply press the connector buttons. This seat fits children from 5 to 40 lb. rear-facing and from 20 to 65 lb. forward-facing. The car seat comes with an impact-absorbing base and a removable pillow. It also includes an easy-remove cover that can come off the seat for cleaning without having to rethread the harness. Some images below may depict an alternate pattern. Actual product is Onyx.

Product Highlights

  • Unmatched side protection guards your child from side impacts
  • Impact-absorbing base acts like suspension on a car, minimizing the harsh force of a collision
  • Impact-stabilizing steel frame delivers reliable strength where your child needs it most
  • V-shaped tether helps prevent seat rotation with a unique two-strap design
  • Britax-patented Staged Release slows the seat's forward movement during a crash
  • Impact-absorbing harness keeps your child's chest clip in place
  • Proudly made in the USA
  • Easy-on/off LATCH connectors install and release with the push of a button
  • Three-position recline allows easy angle adjustment
  • No-rethread, 10-position harness quickly adjusts along with your growing child
  • Quick-adjust, two-position buckle easily moves outward as your child gets bigger
  • Easy-buckle system keeps buckles and straps out of your way when positioning your child
  • Easy-remove cover pulls free of the car seat for cleaning without having to remove the harness
  • Removable pillow for a comfy fit

What's Included

  • Britax Marathon Convertible Car Seat - Onyx
  • Impact-absorbing base
  • Removable pillow
  • Easy-remove cover
Solid Protection
The deep, energy-absorbing shell shields your child from side impacts.
Simple Installation
The easy-on/off LATCH connectors quickly connect to your vehicle.
Tailored Fit
The easy-adjust, 10-position harness grows along with your child. Change the height of the seat with just a push of a button.
Stylish Fabric
Looks good in your car.

Product Description

The Marathon Convertible Car Seat is an excellent choice for getting your family where they need to go safely and comfortably. SafeCell Impact Protection surrounds your child in safety components that work together to protect well beyond the established federal safety standards. Complete Side Impact Protection shields your little one in a deep protective shell designed to absorb crash forces and protect from debris. Car seats work best with the right fit, so the Marathon comes with the Quick-Adjust, 10-Position Harness and 2-Position Buckle to keep up with your growing child. Installation is simple with Easy-On / Easy-Off LATCH Connectors that lock into place with an audible click and are easily released with the push of a button. Plush Foam Padding provides premium comfort at every touch point and there are 3 Recline Positions so your child can relax at the right angle. The Marathon converts from a rear-facing position (for babies 5-40 lbs.) to a forward-facing position (for children 20-65 lbs.) to keep your child safe and you free from worry wherever the road takes you.

Britax has been a pioneer in child passenger safety for over 35 years, developing innovations that enhance the safety of child car seats and improve their ease of installation and use. Their commitment to improving child safety is unparalleled: all Britax products undergo the most rigorous testing in the industry at 5 Britax testing facilities worldwide. Britax works closely with vehicle manufacturers, consumers, and child safety experts to encourage design improvements, ensure proper installation and use, and develop new ideas to improve child safety seats' safety and ease of use.

Be sure to visit our Britax Brand Store to check out even more superior baby products and registry must-have's!

Features

  • SafeCell Impact Protection - integrated system of safety components that work together to protect your child well beyond the federal safety standards.
  • SafeCell Complete Side Impact Protection surrounds your child in a deep protective shell designed to absorb crash forces and shield your child from debris.
  • Quick-Adjust, 10-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.
  • Easy-On / Easy-Off LATCH Connectors lock into place with an audible click and are easily released with the push of a button.
  • Tangle-Free, 5-Point Harness prevents the straps from twisting making it easier to load your child into the seat and ensuring a safer ride.

Additional Info

411544

C2295D25

652182719487

E9LX11A

21 x 18.5 x 26

5 lbs

65 lbs

Convertible

Latch,5 Point Harness,Front Adjusters,Adjustable Head Support,Washable Fabric

Yes

Not Rated

23.1 pounds

29.5 x 19.0 x 18.2

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 in our 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
This item may be shipped in the manufacturer's original packaging, which could reveal the contents of the box

Average Customer Rating:

by PowerReviews
Britax Child Safety 1011449 1011449Britax Marathon (G4.1) Convertible Car Seat Onyx
 
4.6

(based on 317 reviews)

Ratings Distribution

  • 5 Stars

     

    (228)

  • 4 Stars

     

    (65)

  • 3 Stars

     

    (11)

  • 2 Stars

     

    (7)

  • 1 Stars

     

    (6)

94%

of respondents would recommend this to a friend.

Pros

  • Realistic (7)
  • Detailed (5)
  • Stands on its own (4)
  • Reliable (3)
  • Safe (3)

Cons

No Cons

Best Uses

  • Young children (11)
  • All ages (5)
    • Reviewer Profile:
    • Parent of two or more children (10), First time parent (9), Working parent (6), Daycare provider/ educator (3), Education oriented (3)
    • Was this a gift?:
    • No (22)

Most Helpful Positive Review

 

Marathon CS

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...Read complete review

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.

VS

Most Helpful Critical Review

 

Overrated!

I've had these for over a year. After a couple washes the cover fell apart; the seems came undone and the edges all frayed. My girls are tall for their age and I...Read complete review

I've had these for over a year. After a couple washes the cover fell apart; the seems came undone and the edges all frayed. My girls are tall for their age and I got these because they said they would accommodate 49 inches. Kate is 42 inches and with the seat back all the way up the straps are just slightly above her shoulders. She will never make it to 49 inches and meet the "at or above the shoulder" requirements. When we installed these rear facing we had to put towels under them to meet the proper alignment, we have a Sienna so I'm not sure if that is a problem with our vehicle. Under the seat cover is a half inch thick layer of foam and that is all there is for comfort; that also breaks apart if you have to wash it. I did a lot of research and this is supposed to be a good product. If this is good I'd hate to see the bad. There is a sturdy looking bar along the sides that look like it would give pretty good protection; this perceived protection is why I'm giving it a 2 and not lower. The rest of the impact protection is just compressed Styrofoam. Those flaps on the head rest that look like they might surround the child's head are just for show and don't actually fold to cushion her head when she falls asleep. Every single time I put the girls in them I have to raise the chest buckle, adjust the shoulder pads, and untwist the straps. The Velcro to hold the straps to the edge is a nice concept but it doesn't line up and is worthless.

Reviewed by 317 customers

Displaying reviews 1-10

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4.0

Purchased two!

By Mommack

from Toronto, ON, Canada

Comments about Britax Child Safety 1011449 1011449 Britax Marathon (G4.1) Convertible Car Seat Onyx:

Bought one seat to try it out and liked most of the features. Got in on sale so found the price to be reasonable. After a couple a months bought a second one for my husband's car. Only part that is a bit difficult is stealing the baby in but that's only when he is fussy. No other issues.

 
5.0

Recommend

By Katie

from undisclosed

See all my reviews

Verified Buyer

Comments about Britax Child Safety 1011449 1011449 Britax Marathon (G4.1) Convertible Car Seat Onyx:

We love our car seat!

 
5.0

Britax convertible car seat

By Megan

from Port Orchard WA

About Me Parent of Two or More Children

Verified Buyer

Pros

  • Great quality
  • Realistic

Cons

    Best Uses

    • Newborn
    • Young Children

    Comments about Britax Child Safety 1011449 1011449 Britax Marathon (G4.1) Convertible Car Seat Onyx:

    We love this car seat! Seems extremely safe, does not move at all once anchored in the car.

    • Was this a gift?:
    • No
     
    4.0

    Great brand for safety

    By Valued

    from undisclosed

    Verified Buyer

    Comments about Britax Child Safety 1011449 1011449 Britax Marathon (G4.1) Convertible Car Seat Onyx:

    Seems comfortable and very safe. Easy to install.

     
    4.0

    I would buy this product again.

    By Valued

    from undisclosed

    Verified Buyer

    Comments about Britax Child Safety 1011449 1011449 Britax Marathon (G4.1) Convertible Car Seat Onyx:

    Easier install and lighter than Diono car seat. So far a great fit.

     
    5.0

    Love these car seats

    By Britax mom

    from New York

    About Me Parent of Two or More Children

    Verified Buyer

    Pros

      Cons

        Best Uses

        • All Ages

        Comments about Britax Child Safety 1011449 1011449 Britax Marathon (G4.1) Convertible Car Seat Onyx:

        Couldn't ask for better quality.

        • Was this a gift?:
        • No
         
        4.0

        I would buy this product again.

        By Valued

        from undisclosed

        Verified Buyer

        Comments about Britax Child Safety 1011449 1011449 Britax Marathon (G4.1) Convertible Car Seat Onyx:

        This is the second Britax Marathon we have purchased. We love it! It is easy to install and adjust to our child's needs. We feel that our child is safe. We like the option to buy for a small baby and use up until a few years of age.

         
        3.0

        Great seat, difficult to install

        By KBeeMama

        from Boston, MA

        About Me First Time Parent

        See all my reviews

        Verified Buyer

        Pros

        • Realistic

        Cons

        • Hard To Move Parts

        Best Uses

        • Young Children

        Comments about Britax Child Safety 1011449 1011449 Britax Marathon (G4.1) Convertible Car Seat Onyx:

        Just purchased this seat for my 15 month old who grew out of his infant seat (Graco ClickConnect35 - great seat!). Installation was difficult, and even now the seat tips to one side. Will bring it to the police department for a second look. Overall it seems comfortable for him, but there is not a lot of room in the rear-facing mode. He's not tall but if wouldn't be a good fit for a baby that is.

        • Was this a gift?:
        • No
         
        5.0

        Happy Customer again

        By Jill S

        from CT

        See all my reviews

        Verified Buyer

        Comments about Britax Child Safety 1011449 1011449 Britax Marathon (G4.1) Convertible Car Seat Onyx:

        Safe. Stylish. Comfort and Sturdy

        • Was this a gift?:
        • No

        (1 of 6 customers found this review helpful)

         
        1.0

        Disappointed

        By Nicole21

        from New Hampshire

        About Me Daycare Provider/ Educator, Education Oriented, Parent of Two or More Children, Working Parent

        Pros

          Cons

          • Breaks Easily
          • Poor Quality

          Best Uses

          • Young Children

          Comments about Britax Child Safety 1011449 1011449 Britax Marathon (G4.1) Convertible Car Seat Onyx:

          The following is a review of my recent experience with Britax. I purchased the seat from Babies R Us, but the issue is with the company that made the car seat.

          I recently contacted Britax because my daughter's car seat cover started ripping on the seam shortly after we purchased it in 2014. I never got around to contacting Britax because it first it wasn't that bad, and life got busy. Over time the hole great and I decided it was time to contact the professionals to ask for help.

          Their response was that they wouldn't replace the cover despite the fact that it started ripping shortly after purchase because I'm outside of the one year warrenty.

          I have stood behind Britax for years because of the quality that I received from the first 4 seats that I purchased, (this one was my 5th) I would still be using them if they hadn't expired, and they still looked like new when I retired them.

          Every time a new parent has asked me which seats to purchase I have ALWAYS recommended the Britax product. However, having to buy a new $70 cover even with the discount they offered is seriously a slap in the face after I have spent so much money on their products and encouraged others to buy them as well.

          I will no longer recommend the Britax brand to others because they don't stand behind what they make. A cover to a seat should last more then a year, and this one didn't even last that long. Shame on me for not contacting the company sooner, but shame on them for not standing behind their product.

          The cover flops all over the place, doesn't stay on the product, and it is ripping at the seams. When it all comes down to it, it probably isn't even safe.

          • Was this a gift?:
          • No

          Displaying reviews 1-10

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