Features 1. High-Quality Heated Socks: Our heating socks are made of premium polyester blended material, which is comfortable and breathable. The heating elements cover your whole forefeet, which has an excellent warm effect. 2. 3 Temperature Setting&Timer Function: Our battery heating socks have 3 gear temperature setting: Low: 35~38 . Medium: 45-50 . High: 55; And with timer function (60 H /90 H/ 120 H). Itcan keep you warm for long times when full of batteries, allowing you to keep you warm and more comfortable in the cold winter. 3. One size fits all: 36-43(230 mm~265 mm). These beer mug socks are hand sewn to fit you perfectly right out of the box. 4. Perfect for Variety of Sports: Heated socks are great for indoor activites and outdoor sports like, hunting, fishing, walking dogs, riding, camping, hiking, motorcycle, skiing, snow boarding, sporting events and working outside, keep your feet warm during cold winter. 5. Perfect Gift for Whole Family: Beer mug socks make a perfect gift for a white elephant, birthday, Christmas or even Valentines day. Machine wash cold, tumble dry medium heat, do not bleach. Specification Material: Polyester Color: Yellow Size: 30 x 21 cm, Suitable for: 36-43(230 mm~265 mm) Weight: 130 g Package Include: 1 Pair Beer Mug SocksProducts from Bazhou's store