The Chicco Fit4 4-In-1 Convertible Car Seat, designed to deliver premier child fit and comfort at each unique stage, makes it easy to correctly secure your child from birth through big kid booster. Trusted, easy-to-use installation and safety features unique to Chicco combine with an innovative 4-Stage FitKit System, for ultimate convenience and peace of mind as your baby grows to age ten. One Car Seat 4 Stages to Grow The 4-Stage FitKit System provides optimal fit and comfort through multi-staged construction and easy-to-remove layers, providing more room to grow through each unique stage. Combined with a 10-position easy-adjust headrest and 9 recline positions, your child will be riding in comfort as they grow, correctly secured in each stage: Stage 1: Rear-facing, 4 to 16 lbs; Stage 2: Rear-facing, 12 to 40 lbs; Stage 3: Forward-facing, 25 to 65 lbs; Stage 4: Booster, 40 to 100 lbs; Easiest All-in-One to Install Correctly Chicco-exclusive installation features including ReclineSure leveling system, RideRight bubble levels, force-multiplying SuperCinch LATCH tightener and LockSure belt-tightening system combine to make Fit4 the easiest all-in-one car seat to install correctly. Slim design and space-saving CupFolders make Fit4 easy to fit and secure inside your vehicle. Protection at Every Stage DuoGuard side-impact protection offers two layers of protection with a steel-reinforced frame and EPS energy-absorbing foam that surround the head and torso throughout every stage. A 10-position headrest adjusts in height simultaneously with the 5-point harness to accommodate maximum growth, for best in class protection from birth through booster. The best FIT from day 1 to year 10 for peace of mind and convenience from birth to booster; 4-stage FitKit System includes infant positioner, toddler pad, FitKit core and deluxe shoulder pad; 9-position ReclineSure leveling system; Best in class 10-position headrest; SuperCinch LATCH tightener; DuoGuard head and torso side-impact protection; Steel-reinforced frame; RideRight bubble levels; LockSure steel-reinforced seat belt locking system; Slim design and space-saving CupFolders with push-button removal; Machine washable fabrics; Easy access QR code and Fit4Stages.com transition guide; Usage: The Fit4 is designed for children between 4-100 lbs. and up to 57" tall Care and Maintenance: Machine wash in cold water using mild detergent. Hang to dry. For complete care and maintenance instructions, refer to the product's instruction manual. Specifications: Assembled Dimensions (L x W x H): 21.5" x 19" x 33.5"; Assembled Product Weight: 25 lbs.; Ship Weight: 29.5 lbs.; Carton Dimensions: 27.5" x 22.5" x 19.75";.