Camping Pro - Keystone: Lightweight Self Inflating Sleeping Pad for Camping Outdoor THE DAYCASTRA INFLATED IS 71" LONG AND 23.5" WIDE camping mattress at 42 ounces. Stuff sack size: 12 x 7 inches. THICKER AND MORE COMFORTABLE than the average self inflating mat. FOAM FILLING provides comfort and warmth. If using outside, ensure objects such as sticks and stones are removed from the area where the pad will be used to enhance comfort. EASY FLOW VALVE allows quick inflation and deflation. Simply open the valve to allow air flow and top up with a few breaths to increase inflation. USEFUL OCCASIONAL MATTRESS that can be used at home for unexpected guests and sleepovers.