Rated to 15 degrees Fahrenheit, the Eureka Casper mummy-style sleeping bag is designed for those users who want the ultimate lightweight compact bag at a great price. It features a bag-within-a-bag design, which keeps cold air from the outside from getting through and warm air on the inside of the bag from escaping. The inner layer of the bag is cut smaller than the outer layer to create a consistent thickness of insulation throughout the bag, which prevent thermal leaks from forming. The trapezoidal foot section is angled to allow for the foot's natural sleeping position. It has a fully adjustable contoured hood. Other features include a two-way, self-repairing zipper, inside stash pocket, exterior pillow pocket, and compression stuff sack.This sleeping bag is filled with Eureka's proprietary Rteq fiber fill, which provides maximum warmth with the lightest wieght and most compact stuff size. Rtyeq fiber fill is a blend of four different fiber each chosen for it's properties related to loft, compactness, thermal perofmance and durability. Rteq is the best fill availible when examining the performance to price relationship

Lightweight, mummy-style sleeping bag rated to 15 degrees Fahrenheit; includes compression stuff sack

Proprietary Rteq fiber fill--provides high-level warmth at a lower weight and a compact stuff size

Bag-within-bag double layer construction to prevent heat loss; warm-to-touch peached polyester lining

Fully adjustable contoured hood and trapezoid-contoured foot box

Inside stash pocket; exterior pillow pocket; product lifetime warranty