• Polyester, hollow cotton
• Enhanced warmth: thick hollow cotton filling provides insulation, keeping you warm and cozy in cold weather,outdoor ,cold weather sleep sack
• Adaptable for various activities: suitable for camping, hiking, and other outdoor adventures, ensuring a night's sleep wherever you are,sleep bag warm sack,backpacking
• durability: constructed from polyester and hollow cotton, this is built to last and withstands regular use,outdoor functional bag,adult cold weather
• Warmth: the thick hollow cotton filling ensures maximum warmth, allowing you to sleep comfortably even in freezing temperatures,outdoor camping insulated bag,lightweight camping bag
• Multipurpose: ideal for outdoor camping, hiking, and other activities, offering a comfortable sleeping environment in various settings,sleeping accessories,thermal