Knitted with fluffy mohair-style yarn. It's soft and light to wear. The simple ribbing doesn't constrict. Thumb holes are included. They can be used as arm warmers, or you can put your feet through them and use them as leg warmers, which will keep you very warm. Length: 20cm, Width: 9cm The material is a mix of acrylic, nylon, and wool. Please hand wash gently. Thank you for looking.