Features: 100% anti-pilling polar fleece material. Soft, comfortable as well as keep warm. With double-sided zipper, convenient to use. It can double as a blanket or picnic rug when it is unzipped. Can be used with other sleeping bag (not included) in the winter, in order to enhance the heat-preservation effect. Lightweight, compact and portable. Suitable for office lunch break, travelling, camping, and other outdoor activities.