18 - 80 lbs. This Reacaro child seat comes with the universal restraint system for children . SIP System (Side Impact Protection). Adjustable backrest without removing the belt. With integrated harness system for children weighing between 18 and 40 lbs, and whose height is 59 inches or less. Without (removed harness system) as booster seat for children weighing between 30 and 80 lbs, and whose height is 59 inches or less. Suitable only for forward-facing installation. Ergonomically designed and Recaro approved. Adjustable seat angle for perfect fit to rear bench. New and extremely durable Microfiber makes the Recaro child seat one of the best on the market.