It is a light warmer that can be worn on the ankle or wrist all year round. Born as a short length of "hemp and charcoal thin leg warmer (¥ 3300 tax included)". The surface is made of a mix of hemp and cotton (antibacterial processed) with high moisture absorption. We used ceramic charcoal-dyed organic cotton yarn, which has excellent moisture absorption and deodorization, for the inner surface. Compared to the conventional product (kinokoto's silk and charcoal leg warmers), it is about half as thin, so you can wear it without affecting fashion. The length is 26 cm, which is just right from spring to summer. It can be worn on the wrist and ankle, and is a useful item even in the season when it becomes light. You can wash it by hand or put it in a laundry net.