This sleek booster can be used as high back or a backless booster, and features patented EggShock foam in the head area for maximum energy absorption. Built-in air vents and breathable fabric make this seat comfortable for your growing child, and the cup holder allows them to keep their drink like a big kid! Features: Enhanced Side Impact belt positioning booster. Can be used with or without the backrest 33-100 lbs. Seat belt guides adjust vertically and horizontally for optimum comfort and fit. Egg Shock Foam Energy absorbing EPS foam in the head area Air vents in the actual shell, comfort foam and fabric for healthy ventilation. Comfortable arm rests Removable cup holder can be used on either side Easy to use, adjustable backrest Removable, Washable Padded Seat Cushion Specifications: Designed to accommodate children 33 to 100 lbs Can be used with or without the backrest at 33 to 100 lbs Height range: 33 to 57" Net weight: 10 lbs Gift Wrap not available. Shipping Note: This item ships via UPS Ground within contiguous United States only. Cannot be shipped to AK/HI, PO boxes, US territories, or APO/FPO addresses. Click here for Video Demonstration and 360 View