The Outdoor Research Ultralight Compression Sacks reduces sleeping bags and other stuffables to a pack-friendly size. The new Ripstop siliconized nylon fabric of the Ultralight Compression Sacks not only makes it thirty percent lighter than its previous incarnation, it also resists moisture and slides into your pack with ease. Four compression straps keep the sack secure and in place after synching. A pocket in the Ultralight Compression Sacks end cap keeps track of small items or can be used for self storage. The Outdoor Research Ultra light Compression Sacks will reduce the size of gear goodies for an easier lightweight carry.