The womens REI Trekker 1.75 pad offers light sleeping comfort for backpacking, camping or traveling. Women-specific design helps you stay warm with increased insulation and padding in torso area, a key heat-loss area for women. Horizontally cored foam is engineered to be lightweight and compressible without compromising warmth. Non-slip, brushed polyester upper surface is soft to the touch 75-denier polyester bottom surface resists wear. Quick-closing, high-volume airflow valve allows the pad to inflate and deflate quickly. R-value rating is 4.2. Included stuff sack protects pad during transport and ensures a compact parcel every time.