Western Mountaineering Apache MF

The Western Mountaineering Apache MF is a mummy bag rated to a -9°C (15°F) limit, packing 482 g of 850 fill power goose down into a 20D MicroLite XP microfiber shell for a total weight of 851 g. Compared with the Windstopper-shell Apache GWS, this MF version trades wind and moisture resistance for lower weight, relying on a DWR treatment rather than a laminated membrane to shed light moisture. An adjustable, fitted hood along with an insulated draft collar and draft tube handle heat retention around the head and zipper — standard cold-weather features on WM mummy bags, appropriate given the sub-freezing rating. Unlike some other bags in the range, it isn't listed as coupleable with a matching bag for a double setup. This is the short-size listing, fitting users up to about 167 cm; taller hikers should look at a regular-length Apache. At roughly 94.6 g per degree of rating, it's a reasonably efficient three-season alpine bag for hikers who don't need the wind protection of the membrane version and would rather save the weight.