The McKinley is a “heavy duty” oversized hooded rectangle bag. It uses a 2-layer offset construction to eliminate cold spots. The Yukon series use 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 sleep.Stay warm on chilly mountain evenings with the heavy-duty McKinley rectangular sleeping bag from Browning. The oversized, hooded McKinley bag is filled with Techloft insulation, a series of multi-hole, staple-length micro-denier fibers with a siliconized finish for maximum insulation, loft, and compactness. Add in a two-layer offset construction to eliminate cold spots and you have a bag that keeps you toasty on chilly nights without restricting your movement like a mummy bag. The McKinley’s contoured hood and insulated chest and zipper baffle also keep you warmer when the mercury dips by sealing in the warmth as you sleep. Construction-wise, the bag features a 210T nylon diamond ripstop exterior and a comfortable microfiber liner, so you can stretch out in comfort. And it’s easy to carrying the McKinley thanks to the compression stuff sack and roll-up straps. A great hunting bag for frigid nights, the bag measures 36 by 90 inches and weighs 8 pounds 12 ounces.