ALPS Mountaineering Crater Lake Outfitter 20 Degree Regular Rectangular Sleeping Bag - Blue - The Crater Lake Outfitter sleeping bag is a great choice for rental programs where the bag will see a lot of use from various people. With a zip-out liner, just the liner can be laundered, which saves a lot of water when you consider the whole bag doesn't have to be washed every single time. It also features a #10 zipper so that it will last time and time again through repeated, rugged use. Two Crater Lake Outfitter bags can be zipped together to create a double bag. 210T polyester liner with poly cotton zip-out liner Poly cotton liner can be removed and washed instead of the bag to extend the life of the sleeping bag 210T nylon ripstop outer fabric TechLoft Silver insulation 2-layer construction #10 zipper Includes compression stuff sack