From Veer, this air pad feature:  Air Pad is Veer's self-inflating play pad and basecamp cushion that uses large, safe valves for quick and easy inflation.  Air Pad sits under basecamp to provide a safe buffer or is used by itself on rugged terrain to create a soft play surface When used with Basecamp, a knee pad "welcome mat" in front provides comfortable in-out for kids or knee cushion for parents.  Air Pad attaches to cruiser for hands-free transport with a bag virtually identical to Basecamp's bag. approx. 3/4" in. thickness  Approx. 54" L x 56" W; 13"L x 8" diameter in storage bag Approx. 3.5 lbs. Imported.