About this item 210T Polyester pongee Imported COMFORTABLE, DURABLE, SKIN FRIENDLY -- Breathable and soft. Use 210T pongee fabric, filled with high-quality down cotton. You will be comfortable no matter how hard and rough the ground is. MACHINE WASHABLE -- Use high-quality washed cotton inside. This cotton sleeping bag remains soft and skin-friendly after washing. WARMTH -- Down Cotton fiber fill 180/300/400 g/m². Down cotton combines the warmth of down and the moisture-proof properties of hollow cotton. It is designed to keep you warm all night. Recommend sleep zone: M180(36.5℉ to 42.8℉)/M300(24.8℉ to 32℉)/M400(17.6℉ to 24.8℉). CONVENIENT STORAGE -- Each sleeping bag is equipped with a compression bag with straps, which makes it easy to store and carry. It can be packed into an ultra-compact bag in a few seconds without folding or Rolling, saving you more time. BUY WITH CONFIDENCE -- We stand behind our products and provide a 30-day money-back guarantee for any reason and limited lifetime warranty for quality-related issues. If your product has a manufacturing defect simply let us know!