Tomshoo Lightweight Sleeping BagNotice The sleeping bag uses waterproof fabric, but considering the practical properties such as the breathability of the product, the sleeping bag cannot be directly soaked in water. Mummy Type: This sleeping bag is lightweight and water resistant. With aluminum foil lining, it can reflect and retain your body heat to keep you warm. The adjustable drawstring hood is designed for better warmth. In front of the sleeping bag is a zipper designed for