One4Life takes your child from birth to big kid with Britax Safety and ClickTight Installation. It converts from a rear-facing infant seat, to a forward-facing 5-point harness, to a high-back belt-positioning booster. ClickTight is as easy as buckling a seat belt, so you can install with confidence, every time. A high strength steel frame, crumple zone, and V-shaped tether help absorb crash energy. And, 2 layers of side impact protection surround your child’s head, neck and torso. Features: 10 Years of Use:  One4Life convertible to booster car seat grows with your child from 5 – 120 lbs (2.3 - 54 kg) and up to 63” (160 cm) tall Install Confidently:  With ClickTight Installation, you’ll know it’s right in 3 easy steps: Open, thread & buckle, click it closed. One4Life Coverts from a rear-facing infant car seat, to a forward-facing 5-point harness, to a high-back belt-positioning booster Britax Safety:  High strength steel frame & crumple zone help absorb crash energy; patented v-shaped tether Full Body Protection 2 layers of side impact protection surround the head, neck & torso No Rethreading, Ever: 15-position harness & headrest move together using one hand for the proper fit as your child grows SafeWash Cover Safe to machine wash and dry; knit construction is naturally flame retardant Relax & Recline:  9-position, quick-adjust recline & easy-read level indicators help your find the correct angle for your vehicle & most comfortable fit for your child More Comfort:  Plush foam padding and fabrics for premium comfort & a quiet ride Specifications: Rear-facing Harnessed: 5 - 50 lbs and up to 49" tall Forward-facing Harnessed: 22 - 65 lbs and up 49" tall  Belt Positioning Booster: 40 - 120 lbs and up to 63" tall  Exterior Product Dimensions Product Weight: 30 lbs  Product Dimensions: 20.5" L x 19.5" W x 25" H [52.07 cm X 49.53 cm X 63.5 cm] Headrest Fully Extended Height: 33.5" Fully Reclined Depth: 30” (76.2 cm) Fully Reclined and Headrest Fully Extended Depth: 35.5” (90.17 cm) Interior Product Dimensions Seating Area Depth 13.25" (33.65 cm) Seating Area Width 11" (27.94 cm) Shoulder Width 14" (35.56 cm) Harness Slot Heights: 15 positions, 9"(22.86 cm) - 19"(48.26 cm) Buckle Strap Positions: 5.5”(13.97 cm) / 6.75”(17.14 cm) / 8.75”(22.22 cm) Recommendation Britax strongly recommends that children should be secured with a harness system until they exceed the weight or height limits specified. Related Content: