Everest Mummy +5F/-15C Degree Sleeping Bag - 2 PACK! Mummy-style sleeping bag covers head and shoulders for added protection and warmth Double-layer construction is one of the warmest designs; avoids "cold spots" where the fabric is sewn through 3.5 pounds of Micro Tekk Z1 fill Polyester outer, polyester liner Everest mummy sleeping bag comes with a compression stuff sack ~ Dimensions: 84" x 33" x 24