Montbell Breeze Dry-Tec Warm-Up Sleeping Bag Cover has improved waterproofing through the use of waterproof breathable material and from the full seam tape on the surface. The lining is made with brushed fabric, which ensures heat retention and makes it more lightweight. It stows away compactly, and is therefore practical for carrying with you. It has a nice feel on the skin, and it can be used on its own in the summer. Stuff sack included.