Heated Socks: Get a pair of heated socks to keep your feet warm throughout winter! Powered By: 3x AA batteries (batteries not included). Winter Accessories: This pair of thermal socks are a must have for winter as they feature a super thick material to always keep your feet warm. Breathable Material: They also feature a super breathable material to keep your socks feeling fresh. Size: Suitable for UK sizes 4-11. Material: Made from 95% polyester and 5% spandex. Heated Socks | Living Social | Living Social