The full featured Marmot Trestles 30 Degree Sleeping Bag is a reliable, all purpose synthetic bag that insulates even in sustained cold and damp conditions. Updated style lines and fabric liner keep you comfortable on backpacking, trekking and mountaineering trips. SpiraFil 120 high loft insulation, EN tested. 100% polyester DWR, 100% polyester embossed DWR shell. 100% polyester embossed DWR lining. Dual zippers with two way zipper sliders and zipper guards. Insulated collar with easy access cord. Wave construction offers the advantages of both traditional blanket and shingle construction with no significant weight increase. Classic trapezoidal foot box. Compression stuff sack included. Feely draw cords. Hood draw cord. Second side zip. Snagless draft tube. Stash pocket. Two hang loops. Velcro free face muff. Regular or long length, left or right zipper.