Britax Marathon Clicktight Convertible Car Seat - Mod Black

$423.99 Regular price $529.99


As your child grows from baby to toddler, the Marathon ClickTight convertible car seat easily transitions from rear-facing to forward-facing. The anti-rebound bar helps reduce movement during a crash.

With ClickTight, you can install with confidence, every time. Simply open, thread & buckle, click it closed. Plus, easy-read level indicators and a quick-push recline help you find the proper angle for your vehicle and most comfortable fit for your child.


  • 2-in-1 Infant/child Car Seat: Easily transitions from rear-facing mode to forward-facing mode as your child grows from baby to toddler
  • Full body side impact protection surrounds the head, neck and torso.
  • A steel frame and crumple zone help absorb crash energy.
  • Patented v-shaped tether helps slow forward movement, so you can travel with peace of mind.
  • 14-position harness & headrest move together using one hand for the proper fit as your child grows
  • With ClickTight, you know it’s right in just 3 easy steps: open, thread & buckle, click it closed.
  • Steel frame and crumple zone help absorb crash energy; patented v-shaped tether
  • Complete Side Impact Protection shields your child in a protective shell designed to absorb crash forces and protect from debris.
  • SafeCell Impact Protection is an integrated system of safety components that work 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 Complete Side Impact Protection surrounds your child in a deep protective shell designed to absorb crash forces and shield your child from debris.
  • Anti-rebound bar to limit child seat rotation in a crash when installed rear facing.
  • SafeCell Impact Absorbing Base compresses to absorb crash energy and counteract forward movement keeping your child clear from the seat in front of them.
  • SafeCell 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.
  • SafeCell Impact Absorbing Tether minimizes potential seat rotation with our unique two-strap design and slows forward movement with our patented rows of stitching that “give-way” one at a time.
  • Quick-Adjust, 14-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.
  • 7-position, quick-adjust recline & easy-read level indicators help your find the correct angle for your vehicle & most comfortable fit for your child
  • Plush Foam Padding in the cover, buckle pad, shoulder pads and removable pillow surrounds your child in comfort at every touch point.
  • SafeCell Impact Absorbing Harness slows forward movement in the event of a crash.
  • Flip-forward buckle stays out of the way for easy boarding; removable cover for easy cleaning
  • EZ-Buckle System keeps buckles and straps out of your way when placing your child in the car seat.
  • Certified for Aircraft Travel
  • Car Seat expires 10 years from date of Manufacture


  • Child Weight Rear Facing: 5 - 40lbs (2.3 - 18 kg)
  • Child Weight Forward Facing: 22 and walks unassisted, up to 65lbs (10 kg and walks unassisted, up to 29.4 kg)
  • Child Standing Height (in) 49 or less (124.5 cm or less)
  • Child Seated Shoulder Height Rear Facing: 7.6 - 18.65in (19.3 - 47.3 cm)
  • Child Seated Shoulder Height  Forward Facing: 12 - 18.65in (30.5 - 47.3 cm)
  • Product Weight (lbs): 28.5 (12.9 kg)
  • Product Dimensions (in): 18.5W x 23.5H x 23D (47W x 59.7H x 58.4D cm)
  • Seat Area Depth / Width (in): 10.5 / 11.5 (26.7 / 29.2 cm)
  • Shoulder Width (in): 16 (40.6 cm)
  • Harness Slot Heights (in): 8.35 to 17.7 (21.2 to 45 cm), 14 positions
  • Buckle Strap Depths (in): 5.25 / 7 (13.3 / 17.8 cm)