Emergency Essentials® Fleece Sleeping Bag LinerThe Fleece Sleeping Bag Liner adds extra warmth and softness to your sleeping bag. Adds up to 5 10 degrees of additional warmth to your sleeping bag. The fleece sleeping bag liner zips up just like a standard sleeping bag. You can even zip two together for an extra roomy bag or to squeeze an extra kid or two inside. Also makes a great blanket by itself. Built in straps clip closed and include a handle for easy carrying. 240 gram non pill fleece Trim