Britax Marathon G4.1 Convertible Car Seat, Onyx

March 3, 2017 - Comment
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(as of June 21, 2018 11:45 am UTC - Details)

The marathon convertible car seat is an excellent choice for getting your family where they need to go safely and comfortably. Safe cell impact protection surrounds your child in safety components that work together to protect well beyond the established federal safety standards. And complete side impact protection shields your little one in a deep protective shell designed to absorb crash forces and protect from debris. A car seat works best when it provides 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.

Product Features

  • Safe cell impact protection is an integrated system of safety components that work together to protect your child beyond the federal safety standards, this includes our impact absorbing base and complete side impact protection plus
  • Safe cell complete side impact protection plus provides an advanced level of protection: a deep, foam-lined shell absorbs crash forces and shields your child from debris, and an energy-absorbing headrest keeps your child’s head and neck secure
  • 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


jrs82 says:

ONLY BUY BRITAX! I can not love this car seat any more! This is our second Britax purchase and now I am regretting ever spending money on anything else! We have bought other seats in the past (not Britax) and nothing else compares. Safe, sturdy, easy to install, comfortable. If you’re trying to decide between Britax and another brand, buy the Britax! 

Heidi RUpp says:

Best car seat for your money! Excellent top rated car seat. Easy to adjust and install. This is by far the favorite car seat I’ve owned and I’ve got 4 kids!

Linny05 says:

Own four of them now! Love this car seat! We own four of them between our two kids. Our 5-year-old daughter has been in this since she turned a year old… stayed rear-facing until 22 months. Never has complained about being comfortable. At this point, for her, I wish the lower buckle was easy enough for her to unbuckle on her own. I debated between the newer Click Connect and the G4.1, and ultimately went with all G4.1 because while the Click Connect is easier to install, I dont find the G4.1 to be…

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