The Alpha Omega Elite Convertible Car Seat by Safety 1st is an extended-use car seat with superior comfort and convenience features to keep your growing child safer while riding in the car; from a tiny baby coming home from the hospital to an older child going to school, it'll keep your little one safer during the ride. It starts as a rear-facing infant car seat with a removable infant support to keep smaller babies snugly positioned. It then converts to a forward-facing harnessed car seat and later transitions into a belt-positioning booster for use up to 100 pounds. The moveable armrests make it easier to get in and out of the seat and the padded QuickFit headrest adjust with the harness in one easy step and never needs re-threading! Extended-use car seat. Rear-facing 5-35 pounds. Forward-facing 22-50 pounds. Belt-positioning booster 40-100 pounds. Side Impact Protection. QuickFit padded headrest adjusts with harness in one easy step - never needs re-threading. Removable infant support keeps smaller babies snugly positioned. Movable armrests. Cup holder.