• Fabric and linner of this down socks: 20D 400T nylon.It's skin-friendly,soft and water resisant
• The filler of this winter indoor boots adopt 90% white duck's downwith 650 fluffiness.No long hair impurities, super soft,comfortable and lightweight
• Super lightweight. The weight is only about 80g(Size S, including a storage bag).Two sizes for choose. The length of size S is 26cm, and size M is 29cm
• The top of these indoor slippers are designed with drawstring. It can effectively stop the cold wind from blowing into the socks.
• Multifunction. In cold winter, this product can be used as indoor slippers, expecially for old people and those people who are afraid of getting cold. If you're backpacker, these down socks are best choice.Just bring it and enjoy the camping in cold winter!