Description: This sleeping bag liner is made of durable 20D nylon with a waterproof coating, offering an extremely durable and compact underquilt. It features 300g of 90% white duck down filling, which is washable, has a fill power of 650+, and is breathable, ultralight, foldable, and portable. This design provides superior warmth, under-body insulation, and padding. It can be used as an underquilt in cold weather during winter or autumn, or on its own in warmer weather (18-30 degrees Celsius) during summer or spring. It's recommended to use a moisture-proof ground sheet in a tent. The full-length underquilt is well-cut and fits most typical hammocks or sleeping bags. It is quick and easy to set up and take down, and can be folded into a small size. A compression stuff sack is included for convenient storage and carrying. This underquilt is suitable for camping, hiking, travel, backpacking, fishing, backyard use, picnics, beach trips, cycling, climbing, and other outdoor activities. Specification: * Material: 20D Nylon * Fill Material: 90% White Duck Down, 300g * Unfolded Size (L x W): Approx. 175 x 75 cm / 68.9 x 29.5 inches * Compression Size (L x W): Approx. 18 x 13 cm / 7.1 x 5.1 inches Package Includes: * 1 Piece Underquilt Note: Please allow for slight size deviations and color differences. Please note that this product is NOT a typical sleeping bag.