The Chicco My Fit LE Harness Booster Car Seat is engineered to provide ergonomic child fit excellence with 2 distinct modes for your growing child's car seat needs from age 2 to 10. From the maker's of the #1 rated KeyFit & Next Fit, My Fit provides ultra side-impact protection with Duo Guard, protecting your child with 2 layers of rigid shell protection and energy-absorbing EPS foam. Rest assured that your growing child will be secured in superior comfort with 4-position recline and 9-position headrest to support proper posture throughout every car ride! My Fit provides the easiest to install technology with either premium Super Cinch LATCH or with slide & lock Sure seat-belt rock solid install. Harness Mode: 25 - 65lbs. Booster Mode: 40 - 100 lbs.