The ALPS Mountaineering Camper Flannel Outfitter Sleeping Bag is a great choice for rental programs. It features a large #10 zipper, so it will last time and time again through repeated, rugged use. The outer is a durable Ripstop that looks as good as it feels. The 100% cotton flannel lining provides an extra soft feel when you are sleeping under the stars in the wilderness.Features 100% Cotton Flannel Liner210T nylon ripstop outer fabricTechLoft Silver insulation2-layer constructionIncludes standard stuff sack