The Safety 1st TriMate All-in-One Convertible Car Seat is built to grow with your child while keeping them safe and comfortable on the road. With three modes of use?rear-facing (5?40 lbs. and 19?40?), forward-facing (22?65 lbs. and 22?49?), and belt-positioning booster (40?100 lbs. and 43?52?)?the TriMate is ready to take your baby home from the hospital or your big kid to soccer practice. The seat?s ultra-slim design fits 3 across the back seat without sacrificing comfort. Fabric is machine-washable and dryer-safe. You?ll always get the best fit with the 3-position adjustable base, 1-hand-adjustable harness system, and 9-position headrest. It?s the only car seat your child will need from birth through age 10.