Love the feeling of a cool sheet against your skin on a warm night Even better, the Slumberjack Cooling Sleeping Bag Liner, Blue, Size 80" L x 34" W. wicks away moisture and cools you down with heat-absorbing Comfort Wicking Technology. You can drift off to dreamland while the soft and stretchy fabric protects your bag from getting sweaty and helps to keep it clean. An anatomic footbed lets you sleep naturally, and the fabric stretches to move with you. Stuffs into a durable oxford stuff sack with an easy-carry handle when you re ready to break camp.