The Everest Peak is great for outdoor winter pursuits, when temperatures are not quite so extreme. Expedition-ready features such as Invista Thermolite Extra insulation, ergonomic head gasket and foot box, oversized draft tubes and neck collar. Available with left or right zippers, and may be zipped together with other compatible bags. Thermolite by Invista delivers maximum lightweight warmth in extreme conditions. Specifications: - Color: Yellow/Purple - Temperature Rating: -5F / -20C - Size: 90" x 34" x 22" - Shape: Mummy - Construction: Two layer - Outer Shell: Nylon - Lining: Polyester taffeta - Filling: 2.9 lb. of Invista Thermolite Extra - Zipper: #5 YKK 2-way, reversible puller, auto-lock - Stuff Sack: 4-way compression bag - Total Weight: 4.9 lb.