inflatable back cushion great for camping,traveling,Picnicking etc, inside foam,outside fabric coated pvc,easy carry,rolled up inflatable back ... 21D soft foam or memory foam2.Air cushion great for traving,camping,stadium seating,boating, ... users comfort6.Allows cushion to sit flat and provide relief for sore lower back pain and tailbone ... logo, packing,and color is available. inflatable back cushion