The Western Mountaineering Tamarak Sleeping Bag is a short length sleeping bag for small adults, kids, or even a 3/4 bag for big adults looking for a boost in their alpine bivy. Although it is small, it is still plenty mighty, rated to 30°F and featuring a 4" loft. Summer sleeps in the tent with the whole family, or unzip it and use as a comforter on warmer nights. Given the same awesome filling of 850+ fill power down, so it'll pack down small, regardless of how you choose to use it.