The Marathon Convertible Car Seat is an excellent choice for getting your family where they need to go. SafeCell Impact Protection surrounds your little one in safety and Side Impact Protection shields your child in a protective shell designed to absorb crash forces. A 10-position quick-adjust harness ensures the proper fit as your child grows.
SHIELD YOUR CHILD
Side Impact Protection
helps keep your baby safe during a collision with a deep energy-absorbing shell.
SafeCell Impact-Absorbing Base
Compresses to reduce the force of a collision, diverting energy away from your little one.
STRONG, STABLE & SECURE
Impact-Stabilizing Steel Frame
offers superior strength where you need it most: at the connection point to the vehicle.
Patented, V-Shaped Tether
Minimizes seat rotation by reducing the force of a crash, diverting energy away from your little one.
KEEP IT TIGHT
Ensure a snug vehicle seat belt installation with minimal effort.
SIMPLE & SECURE
Push Button LATCH Connectors
Lock into place with a click and are easily released with the push of a button.
THE PERFECT FIT
3 Recline Positions
Make it easy to find the proper angle for installing your child's car seat.
10-Position, Quick Adjust Harness
Easily adapts with your child with no re-threading necessary.
Designed, Tested & Built in the USA
Most trusted by American families since our US launch in 1996.
Plush Foam Padding & Fabrics
Ensures your child's maximum comfort.
SNUG AS A BUG
Removable Body Pillow
enhances comfort and relaxation for smaller children and infants.
See All Features
|Child Weight - Rear Facing||5 - 40 lbs|
|Child Weight - Forward Facing||20 - 65 lbs*|
|Child Standing Height||49" or less|
|Child Seated Shoulder Height - Rear Facing||9 - 16.75"|
|Child Seated Shoulder Height - Forward Facing||12 - 16.75"|
|Product Weight||19.5 lbs|
|Product Dimensions||18.5" W x 26" H x 21" D|
|Seat Area Depth / Width||11" / 11"|
|Harness Slot Heights||8.5" / 9.5" / 10.5" / 11.5" / 12.5" / 13.5" / 14.5" / 15.5" / 16.5" / 17.5"|
|Buckle Strap Depths||5" / 7.5"|
|*Recommendation||The American Academy of Pediatrics recommends that all infants and toddlers should ride in a Rear-Facing Car Seat until they are 2 years of age or until they reach the highest weight or height allowed by their car seat manufacturer. BRITAX strongly recommends that children ride rear facing to the highest weight or height specified.\|