The Kelty Cosmic SI Mummy Sleeping Mat is a self inflating camping ... of a mixed bag - the ASTM R-Value of 3.9 is perfectly respectable for three season use, and indeed could at a bit of a ...

The Trekology UL80 sleeping pad is made from 40D nylon with water-resistant coatings. The 1.6 R value means it's not the most insulated mat around. Trekology says it's suitable for 3-season use ...

Take their epic Ether Light XT Extreme sleeping pad, for example ... they add an additional layer of versatility to a 3.5-season bag and make it super comfortable in a huge range of conditions.