The Snugpak Special Forces Sysytem - A center zip modular system comprising of the Special Forces 1 based on our Softie 3 Merlin for use above freezing and the Special Forces 2 based on the Softie 10 Harrier. Both bags come with their own stuff sack, reinforced foot and quick release center zip, for when you need to get out of your sleeping bag in a hurry. Supplied with an extra zip baffle to allow both bags to be used together and retain the convenience of closing and opening with one quick release zip. When used together the bags perform in the same way as the softie 15. Available for purchase separately or a as a complete system, which is supplied with an extra compression sack to house all components. Special Forces Combo Complete System Weight: 113 oz Length: 86" Chest: 60" Pack size: 12" x 12" (compressed) Comfort temperature: 5 F Low temperature: -4 F