The Tensor™ Ultralight Insulated Pad by Feathered Friends is the ultimate in lightweight camping comfort. This ultra-thin, compact pad packs down to the size of a water bottle and weighs less than a pound, making it perfect for backpacking and camping trips. It's also incredibly warm and comfortable, with an innovative air-permeable construction and R-value of 4.2, so you can sleep soundly and wake up refreshed.