AZLife Lightweight Insulated Self Inflating Sleeping Pad for Camping Backpacking Hiking Traveling (blue grey) Made of 210T polyester taffeta composite PVC, which is moisture-proof and also skin-friendly 2 inches in thickness, makes it comfortable to lie down, keeps yourself warm all day The sleeping pads can be spliced to hold more people, just enjoy your time with family or friends Durable plastic air valve offers reliable seal, together with high rebound sponge provides rapid inflation and deflation Easy to roll it up tightly for compact storage and transportation after deflation