The Sea to Summit Adaptor COOLMAX Traveller Liner is a versatile sleeping choice for your adventures. It is s ideal for use on its own in warm climates or as a liner in your regular sleeping bag. The popular Mummy has a tapered shape to reduce weight and fit inside a sleeping bag. The 100% COOLMAX polyester knit fabric is a proven moisture management fabric that adapts to varied temperatures and humidity. Even in balmy weather, the Adaptor provides a more comfortable night’s sleep. The knit construction is naturally stretchy, like your favorite t-shirt. This Liner is a lightweight and compact part of your sleep system that washes easily at the end of your adventures. Packs into its own Ultra-Sil stuff sack about the size of a red Solo Cup (6 x 4.5 in). Weight: 8.7 oz. Dimensions: Mummy: 6 ft 10 in x 36 in.