Bag Expander Summer

Add versatility to your Western Mountaineering sleeping bag with their Three Season Bag Expander. Designed to zip into any mummy-style Western Mountaineering sleeping bag, the expander gives you more elbow room in summer, and more snuggle room for you and a partner when the temps drop in early spring and late fall. Western Mountaineering is all about high-quality down, so they stuffed this bag expander with the same 850-fill-power goose down found in their sleeping bags. The Western Mountaineering sleeping bag expander works best with 6 foot bags, but will work with any length, with a bit of overlap (most of the length difference between the bags is below the zipper in the feet).