The Britax Booster Seat holds up to 80 pounds, offers engineered comfort, convenience, and safety, and adjusts to accommodate kids as they grow. The seat is easily installed by buckling the safety belt, and the SafeCell impact protection system boasts an impact-stabilizing steel frame, an energy-absorbing base, and a v-shaped tether. 2 layers of side protection including quick-adjust head protection absorb energy and shield kids from even severe collisions.