The Exped SynMat UL S great little sleeping mat which provides 7cm of insulation whilst maintaining a super small pack size and low weight This shorter version really lends itself to cycle touring or mountain marathons where every gram counts but getting a good night s sleep in even more important The SynMat UL S is filled with 60g/m2 of synthetic insulation providing warmth in temperatures down to -6 deg C The insulation is bonded to both the upper and lower sides of the mat leading to an even distribution of insulation and a reduction in cold spots The upper layer of polyester is brushed for extra next to skin comfort whilst a water resistant coating ensures the mat stays dry even in damp conditions The flatvalve quickly and efficiently deals with inflation and deflation but an Exped Schnozzel Pumpbag for even speedier inflation Since 2017 these mats come with an anti-slip GripSkin coating which helps to keep you on the mat and off the floor With a pack size not much bigger than a 1L Camelback or Nalgene bottle the SynMat UL S is certainly a great addition to your kit bag and will suit a wide range of outdoor activities