1. Thickened polars fleece materialMade from thickened polars fleece material, this sleeping bag liner offers comfort and skinfriendly touch, while providing insulation for warmth in outdoor activities. 2. Lightweight and spacesavingWith a compact size of only 15*15*3cm when folded, this sleeping bag liner is designed to be lightweight and spacesaving. It takes up minimal space in your backpack, making it for camping and hiking trips. 3. Multifunctional designThis sleeping bag liner has a design that allows it to be used as a liner inside a sleeping bag, a cozy blanket for extra warmth, or even a quilt for indoor use. It offers versatility for different camping and outdoor situations. 4. Ideal for outdoor activitiesWhether you're camping, hiking, or backpacking, this sleeping bag liner is a companion for your outdoor adventures. It provides a comfortable and warm sleeping environment, helping you get a good night's sleep in the wilderness.