Hennessy Hammock Radiant Double Bubble Pad REG for use with: Expedtion, Jungle Expedtion, Backpacker, Deep Jungle, Scout XL for use with: Explorer, Deep Jungle XL, Safari Models, Survivor Seasons: 3-season Packed Weight: REG 10oz / 280g; XL 13.9oz / 390g This bubble pad is silvered on both sides and reflects 97% of your body's radiant heat back to you. Under most conditions this pad will keep you warm down to 40 degrees Fahrenheit (5 Celsius) if you are using a good quality 40-degree sleeping bag.