Description: Through improving blood circulation, the heated socks can quickly warm your forefoot to keep your freezing feet warm. Because the socks are breathable and soft to wear to bring you a nice wear experience, they can keep you warm and make you comfortable in cold winter. Using premium polyester cotton material, the heated socks are soft and comfortable to wear. Due to the stretch and elastic material, the socks are suitable for different feet sizes. Winter heated socks are great for hiking, camping, cycling, fishing, skiing, mountaineering and other winter outdoor activities. Item Name: Heated Socks Material: Polyester Cotton Voltage: 4.5V Heating Area: Forefoot Working Hours: About 4-5 Hours Battery: 6 x AA Batteries (Not Included) Heating Temperature: About 50 Degree Celsius Features: Quick Warming, Breathable, Comfortable Size Details: 28cm x 24cm x 9.5cm/11.02" x 9.45" x 3.74" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Using Method: 1. Put 6 x AA batteries into two battery holders (Please use AA batteries that can be recharged above 1500mAh, otherwise you may find that the socks are not warm.) 2. Connect the socks plug to the battery holder, turn on (there is a switch on the battery holder) and you can feel them heating up in minutes. 3. We recommend you to wear a thin pair of socks inside first, then put the heated socks on the outside and put the battery holders with the batteries into the battery pocket on the socks. Turn on the switch, plug in the socks and your feet will be warm. Package Includes: 1 Pair of Heated Socks 2 x Battery Holders