2. Durability and Skin- friendly The outer fabric is 210T Polyester coating which is durable and water resistant; The 190T Polyester Pongee Lining fabric is soft enough and waterproof. These top materials give you feel comfortable sleeping all night.
3. Professional Design You can zip up and down the sleeping bag whatever you are inside or outside the bag by yourself with the double zippers. The adjustable strap and Velcro lock is beneficial to your sleeping position.
4.
Very Practical Temperature Range: 23 °F- 60° F. You could use it in 3 - 4 seasons with warm or cold weather. Especially you can enjoy warm sleeping at night in winter time because of the Filling Hollow Fiber material.