Count on Western Mountaineering to provide a variety of apparel items and sleeping bags that are tough enough to keep you warm on all kinds of challenging expeditions. Western Mountaineering is a small, independent company that brings almost a half century of expertise to everything they make. That's why they use only the highest quality goose down, sourced responsibly from trusted suppliers. Western Mountaineering gear and apparel is made from high tech, downproof proprietary materials such as Microlite XP to save weight, while proprietary Gore Windstopper 830 fabric is used for its weather resistance and breathability to deliver excellent protection from moisture and condensation -- those enemies of warmth and comfort. Whether you're looking for a bag for mountaineering, backpacking, or for when temperatures dip below 0 Fahrenheit, use the filters and sorting options below to find just the right Western Mountaineering mummy or rectangular bag for you. All these high quality products are covered by their Limited Lifetime Warranty to repair or replace damage caused by manufacturer's defects. For help making an informed purchase, read what our customers are saying about all this gear in reviews from verified purchasers. Buy from Campsaver for great service and great gear at great prices. Plus free shipping on orders over $49.