The Chicco KidFit Zip Air 2-in-1 Belt-Positioning Booster Seat is inspired by the convenient and lauded features of the top-rated KeyFit car seat. It safely and comfortably seats children weighing 30-110 lb. as a high back or backless booster car seat. Safely seats children weighing 30-100 lb. as a high back booster Safely seats children weighing 40-110 lb. as a backless booster Suitable for use by children 38-57" tall Child must at least be 4 years old to use seat Easy-to-use vehicle shoulder and lap belt guides Use as a high back or backless belt positioning booster seat DuoZone™ 10-position head and shoulder side-impact protection EPS energy absorbing foam SuperCinch® LATCH attachment and one-pull tightener help keep seat in place for easy in/out ErgoBoost™ contoured seat with double foam padding 2-position backrest can be adjusted to mimic vehicle seat position Height adjustable and removable back EZ Care Zip & Wash functionality allows you to zip-off backrest pad and seat pad for cleaning ease Pop-out armrest covers 2 soft-sided cup holders fold away when not in use BONUS add-on storage console fits into the cup holder for securing big kid essentials Machine washable seat pad and armrest covers Measures 18.75" D x 18.75" W x 32.75" H Weighs 12.1 lb.