Browning McKinley -30 Degree Sleeping Bag. The McKinley is a “heavy duty” oversized hooded rectangle sleeping bag. It uses a 2-layer offset construction to eliminate cold spots. The McKinley series uses TechLoft insulation. TechLoft insulation consists of multi-hole staple-length micro-denier fibers that have a siliconized finish for maximum insulation, loft, and compactness. It will keep you toasty on those colder nights when you’d prefer to have more “wiggle room” than you get with your mummy bag. The contoured hood also helps keep you warmer and keeps your warmth sealed in. For transporting, we include a compression stuff sack and roll-up straps. This is a great hunting bag for those frigid nights when you want a good night’s sleep. Features: Insulted chest and zipper baffle Compression stuff sack Rated: -30 degrees Fahrenheit Dimensions: 36″ x 90″ Fill weight: 160 oz Bag weight: 12 lbs 12 oz. One Size Fits Most.