While you can layer multiple socks at home, it's often challenging to do so when you're out, especially for work or other occasions. That's where our 'Inner Silk Outer Wool' cold protection socks come to the rescue.[Inner Silk Outer Wool]The inner side that touches your skin is made of 100% silk, while the outer side is crafted from 100% wool. This design provides an effect similar to wearing two pairs of socks: silk followed by wool, all in one pair.[Comfortable Fit for Any Occasion]These socks offer a comfortable fit and size, making them easy to wear when you're out and about. They feature a unique three-layer knitting structure, with 100% silk on the inside, 100% wool on the outside, and stretchy yarn in the middle, ensuring they don't cling tightly to your skin.[No Tightness! Loose Elastic Cuff]The cuff is designed without any tightness, ensuring a simple and relaxed fit.[Please Note]When washing, please use a laundry net.Do not tumble dry.Due to the nature of silk, these socks may be more delicate and prone to tearing compared to regular socks.