Close

Right Start

BRITAX MARATHON 70-G3

Intro

Features

Base with SafeCell Technology

features SafeCells designed to compress in a crash, significantly lowering the center of gravity and counteracting the forward rotation of the child seat which normally propels the child toward the front seat

Side Impact Protection

comprised of deep side walls lined with energy-absorbing EPP foam distributes crash forces, shields from vehicle intrusion, and contains the head, neck and body

HUGS (Harness Ultra Guard System) Chest Pads

provides resistance to forward movement in the event of a crash

Tangle-Free, Five-Point Harness

distributes crash forces across the strongest parts of the body and provides a secure fit

Quick-Adjust Harness

repositions the harness shoulder height without disassembling the harness straps

EZ-Buckle System

retains the harness buckle in a forward position and prevents the child from sitting on the buckle when boarding

Plush, Easy-Remove Cover

with matching comfort pads and Infant body pillow to provide extra comfort and easy cleaning without disassembling or uninstalling the child seat

70-pound Weight Capacity

for safety and comfort as your child grows

Rear and Forward Facing Recline

for child comfort and positioning

Energy-Absorbing Versa-Tether

features a staged-release tether webbing to slow the forward movement, reducing the crash forces reaching the child, and a two-point attachment to minimize forward rotation while anchoring the top of the child seat

Integrated Steel Bars

strengthen the connection to the vehicle and reduce forward flexing of the child seat during a crash

Premium Lower LATCH Connectors

for a quick and simple installation featuring a push button for easy release

? Click a feature or image hotspot to view details

360 / Zoom

Zoom

Fashions

Zoom
read more

Azalea

Azalea
Chili Pepper
Cowmooflage
Onyx
Waverly
<
>

Fit & Specs

Child Weight (lbs)

Rear Facing: 5 - 40

Forward Facing: 1 year & 20, up to 70

Child Standing Height (in)

49 or less

Child Seated Shoulder Height (in)

Rear Facing: 9 - 16.75

Forward Facing: 12 - 16.75

Product Weight (lbs)

19.5

Product Dimensions (in)

18.5W x 26H x 21D

Seating Compartment Height (in)

23.5

Seat Area Depth / Width (in)

11 / 11

Shoulder Width (in)

13

Harness Slot Heights (in)

8.5 / 9.5 / 10.5 / 11.5 / 12.5 / 13.5 / 14.5 / 15.5 / 16.5 / 17.5

Buckle Strap Depths (in)

5 / 7.5

Back to top