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Britax Marathon G4.1 Convertible Car Seat Gridline Britax Marathon G4.1 Convertible Car Seat Gridline



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The MARATHON Infant/Child 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 and Complete Side Impact Protection shields your child in a protective shell designed to absorb crash forces and protect from debris. A 10-Position, Quick-Adjust Harness makes it easy to ensure the proper fit as your child grows.

SafeCell Impact Protection is an integrated system of safety components that ork together to protect your child well beyond the federal safety standards. Including an Impact Absorbing Base, Tether and Harness, an Impact Stabilizing Steel Frame , and Complete Side Impact Protection, SafeCell means your child is surrounded in
best-in-class safety.

EZ-Buckle System keeps buckles and straps out of your way when placing your child in the car seat.

Easy-On / Easy-Off LUAS Connectors lock into place with an audible click and are easily released with the push of a button.

Anti-Rebound Bar to limit child seat rotation in a crash when installed rear facing

Complete Side Impact Protection surrounds your child in a deep protective shell designed to absorb crash forces and shield your child from debris.

Impact Absorbing Harness keeps your childs chest clip correctly positioned and absorbs energy in the event of a crash

Impact Absorbing Base compresses to absorb crash energy and counteract forward movement keeping your child clear from the seat in front of them.

Impact Absorbing Tether minimizes seat rotation with a unique two-strap design and slows forward movement with BRITAX patented rows of stitching that give-way one at a time in the event of a crash

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.

Impact Stabilizing Steel Frame gives you peace of mind knowing there is strength where you want it most, through the spine of the car seat reducing forward flex and at the connection points to the vehicle.

3 Recline Positions for your childs comfort and safety

Product Features
  • Rear Facing: 5-40 lbs; 2.3 - 18 kg
  • Forward Facing: 22-65 lbs; 10 - 29.4 kg
  • Product Weight (kg/lbs): 8.8/ 19.5
  • Product Dimensions (cm/in): 47W x 66H x 53.3D/ 18.5W x 26H x 21D
  • Buckle Strap Depth (cm/in): 12.7, 19.05/ 5, 7.5
  • Seat Area Depth, Width (cm/in): 27.9, 27.9/ 11, 11
  • Shoulder Width (cm/in): 33/13

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Estimated Package Dimensions

  • 23.00 x 21.00 x 13.00 inch

Estimated Package Weight

  • 22.00 lbs