SKU: SS18827 R-Value: 1.1 Season Rating: Summer Mat Size: Short Mat Type: Airbeds Weighs: 366g (excluding bag) Ultralight and compact, this exceptionally comfortable mat is ideal when light and fast is your aim and getting a great night's sleep is essential for the next day's adventure. Sea to Summit says:  The Ultralight sl… UltraLight Sleeping Mat - Small