Durable nylon fabric with aviation grade polyurethane lamination technology for ultimate durabilityHigh-volume valve allows for efficient and easy inflation and super-fast deflationBuilt-in advanced heat reflective technology provides insulation against the cold groundAntimicrobial treatment inside the pad prevents microorganism growthMinimalist I-Beam construction reduces weight and provides consistent stability and comfortLarger outer chambers keep you comfortably cradled in the middle of the pad