Description: 3 MODES TRANSITION FROM BABY TO BIG KID Three modes of use accommodate children from birth to age 10: 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"). FITS 3 ACROSS THE BACK SEAT The TriMate All-in-One Convertible Car Seat’s ultra-slim design— just 17” across without the cup holders —allows parents to fit three across the back seat without sacrificing comfort. CLEAR, SIMPLE INSTALLATION AND ADJUSTMENT TriMate All-in-One features a 9-position headrest that adjusts quickly with just one hand, a hassle-free harness system that adjusts without complicated re-threading, and visible belt paths for easy installation. KEEPS LITTLE ONES COZY Soft, memory-foam infant insert keeps small babies comfortable and secure. Forward-facing with harness, 30-65 pounds and Belt-positioning booster, 40-100 pounds Designed to fit 3 across in most vehicles – great for growing families and car pools Lightweight and easy to move from car to car Deluxe fabric gives kids a comfy ride