• cotton
• ❤【Upgrated Sleeping Bags 】Made of comfortable material .when you're inside it zips a very nicely and it has a great slit at the bottom where you can open it up to let airflow in so you don't get too warm so it's amazing that way
• ❤【TWO-WAY ZIPPER】New design, More ergonomic. This camping sleeping bag is more distinctive than an ordinary sleeping bag. A two-way zipper is designed for airing your arms and feet. This makes it easy to do whatever you want and does not need to come out of the sleeping bag
• ❤【NEW 2 IN 1 DESIGN】Combining Left-zip and Right-zip Sleeping bag together,you can make a double sleeping bag, which is great for two people camping together, and it’s warmer
• ❤【MORE WARM & COSY】Weighs 2.98 lbs, more cotton content and high elasticity cotton filling, so you can feel more comfortable and warm. And comfort temperature range is 23°F to 68°F(-5℃-20℃). The hiking sleeping bag use a fabric for high-end clothing (waterproof 210T polyester shell 210T polyester lining) for soft, warm
• ❤【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