One of the warmest sleeping bags in the Chinook product line featuring Invista Thermolite Extreme insulation, ergonomic head gasket and foot box, waterproof/anti-slip HiTex bottom fabric, oversized draft tubes and neck collar for added protection in the most extreme conditions. The Chinook SnugHood design gives the best fit around the facial area providing extra comfort while reducing bulk when the draw cord is fully tightened. May be zipped together with other compatible bags. Thermolite by Invista delivers maximum lightweight warmth in extreme conditions. Specifications: - Size: 90" x 34" x 22" - Shape: Mummy - Construction: Four layered shingle design - Outer Shell: Top is Invista Tactel diamond ripstop nylon / Bottom is Waterproof anti-slip HiTex nylon - Lining: Pongee Pro - Filling: 3.5 lbs. of Invista Thermolite Extreme - Zipper: #8 YKK 2-way, reversible puller, auto-lock - Stuff Sack: Cap Compression bag - Total Weight: 5.7 lbs.