• Nylon
• 【Ultra Comfort & Durable】Outer material: Nylon (Waterproof and Durable), Lining:100% Polyester (Breathable and skin-friendly), Premium Polyester keeps the temperature from 55 to 60℉ and provides a ultra-comfort sleep environment to people.
• 【Professional Design】The sleeping bag is waterproof and weatherproof. And the smooth zip closure makes it more convenient. Our sleeping bag measures 83"L x 30"W, the size fits for most people. It can accommodate an adult or two children
• 【Compact & Lightweight Easy To Carry】Unlike down sleeping bags, Our envelope sleeping bag is easy to roll up into the carrying sack and it can be compressed down to just 11" in height and 1.7lbs in weight. It's ideal for backpacking enthusiasts
• 【MULTIPURPOSE VERSATILITY】You can use our warm weather sleeping bag without sleeping bag liner in multiple weather conditions. It's a perfect sleeping bag for Outdoor camping trips, Boy Scouts or mountain hiking，also works as camping comforter