Stow it, strap it, pack it The REI Trekker 1.75 pad offers lightweight sleeping comfort for backpacking, camping or traveling. Horizontally cored foam is engineered to be lightweight and compressible without compromising warmth. Quick-closing, high-volume airflow valve allows the pad to inflate and deflate quickly. Non-slip, brushed polyester upper surface is soft to the touch 75-denier polyester bottom surface resists wear. R-Value equals 4.2. Included stuff sack protects pad during transport and ensures a compact parcel every time.