Naturehike CW295 Envelope Down Sleeping BagSUFFICIENT DOWN FILLING Adopting a sufficient amount of 295g of 85% gray duck down to fill the whole sleeping bag, the high filling capacity holds more still warm air and brings you a thick wrapping feeling. The naturally grown duck down has no special odor, and the 800 fill power is higher than normal duck down to have a high fluffy feeling, bringing you a comfortable experience like clouds. Tap the sleeping bag before first use to make the down