Whether you're backpacking climbing or ski mountaineering the Mountain Hardwear Phantom Gore-Tex Sleeping Bag is a critical staple for your overnight kit in the high alpine. This versatile expedition mummy is designed to be lightweight warm and comfortable when you find yourself out in cold weather conditions. It is constructed with Gore-Tex Infinium to block wind and repel rain while allowing vapor to escape for comfort in severe conditions. Its high quality down keeps you warm while being highly compressible so you can easily pack along all the other gear you'll need for your trip too. Mountain Hardwear thoughtfully constructed the Phantom for a warm and comfortable sleep whether you're on a backcountry hut trip multi-week backpacking trip or a high-alpine traverse. For starters vertical side wall baffles add warmth and provide maximum loft while an oversized down-filled face gasket extends into the hood to block drafts on those extra chilly nights. Additionally the shaped draft collar prevents your warm body heat from escaping through the zipper and the expedition mummy cut allows you to store gear in freezing temperatures.