The onBoard 35 Air+ Infant Car Seat features Air Protect + to keep children from 4-35 pounds safer in the car. Air Protect + combines the advanced protection of Safety 1st's Air Protect cushion system with patented GCell HX foam designed with hexagonal shapes for superior protection around the torso. TOGETHER they provide full body side impact protection. In addition to Air Protect +, the onBoard35 Air+ is LATCH equipped with an adjustable stay-in-car base with LATCH storage. This infant car seat also includes a customizable infant insert to give a safer snug fit to tiny travelers.