This bag is constructed with Sierra Designs' Flex™ construction. The bag expands when pressure is applied adding girth to the bag when needed. Some people can even sit cross legged in this bag yet it constricts if lying straight so extra space need not be heated. The liner is of 50D x 70D Polyester Taffeta and the shell is constructed of 50D Polyester Taffeta w/ DWR.

Sierra Designs Dream Machine

Sleeping Bags **Expedition Bags** Bison - Down Dark Star - Synthetic Puma - Down Tundra - Synthetic **4 Season Bags** Antelope - Down Snowshoe - Synthetic Night Light - Synthetic Night Delight - Synthetic Superlight - Down **3 Season Bags** Cats Meow - Synthetic Goliath - Synthetic Dream Machine - Synthetic Dreamweaver - Synthetic Moonlight - Down Sweat Dreams - Synthetic