With its 7 cm loft and synthetic insulation, the Ultra R3 is ready for comfortable nights in three season use. The fill helps prevent air from circulating between the parts warmed up by your body and parts in contact with outside air. With an R value of 2.9, this pad has an Exped lowest recommended temperature rating of -5ºC. - Duo size, suitable for two hikers or one extremely restless sleeper: 183 x 105 cm - Surface fabric: Oeko-Tex 100 certified 20 denier ripstop - Insulated with 60g/m² Texpedloft A Schnozzel pump bag is included to fill the pad without the need for blowing. Blowing would draw moisture into the pad and the use of a pump bag reduces fainting.