With an ultra-cushy 3.5-inch thickness and soft-touch stretch fabric upper surface, the extra large REI Camp Bed 3.5 provides plush comfort for base camping. Horizontally cored foam is engineered to be lighter weight and more compressible without compromising warmth. Antimicrobial treatment prevents fungus and bacteria from growing inside your pad. Dual quick-closing, high-volume-airflow valves allow the pad to inflate and deflate quickly. Durable 150-denier polyester bottom surface resists wear. R-Value equals 7.0. Stuff sack included protects pad during transport and ensures a neat parcel every time.