ABOUT SAVIOR HEAT: SAVIOR HEAT has been focusing on electric heating products for more than 10 years and has excellent professional technology. For 10 years, concentrating on researching heating technology, after continuous improvement and innovation, SAVIOR HEAT is your trusted partner. The main products of SAVIOR HEAT are heated gloves, heated socks, heated balaclava, heated hat, heated knee pads etc. In the future, we will also work hard to develop better heating products. Savior Heated Socks, Rechargeable Battery Powered Heating Socks, Hiking socks Climbing Foot Warmer,Indoor Outdoor Sport Thermal Socks Savior rechargeable heated socks Good for blood circulation, warm whole body ; help a lot in keeping your feet from cold in coming up winter season. Great option to keep you feet warm and toasty. Electric battery socks with 7.4V 2200MAH Rechargeable Li-ion Batteries provides you a fast safe charging. Larger capacity and longer working time than others. Winter nice gift with elegant package ,fashion and improved quality are the idea gift for your friends and families and whomever you want pass your warmth and love. What's in the BOX 1 Pair heated socks 2pcs 7.4V 2200mAh batteries 1 Dual Charger 1 User manual Warm Reminder Due to long time transportation, the battery may be not fully charged when you received. Please fully charge the battery before first use. 7.4V Battery Heated Socks Unisex Warm Thick Footwarmer For Winter Outdoor & Indoor Sports How to Use Long press the power button for 3 seconds, then the LED light will on. Short press the button to change the heating level. Long press the power button again to turn off. Washing Instructions: Remove batteries before cleaning. Hand wash is recommended for more safety. If Machine Wash then it is recommended to use washing bag to wash it. Read more Main Questions: Q:How to choose the size? A:Choose the bigger size if you have longer toe or in between size according to our size chart. Q:Are the rechargeable socks fore foot and the insteps both heating? A:Yes,Heating elements covers whole fore foot and insteps. Q:Heat socks only warm for about 30 minutes then went off when I first use it. A:Since mostly batteries did not full charged,so please charge it around 4 hours before using. Q:Do the electric socks work under subzero? A:Yes, they do. Enjoy cosy warmth on your feet no matter what you're doing outside. Read more 3 Temperature Heating Levels Heated socks with 3 intelligent heating levels. You can choose temperature settings according to your needs. 7.4V 2200mAh rechargeable battery is safe and reliable, providing you with a whole day of warmth. If you need to use it outdoors for a long time, it is recommended to buy extra batteries. Long Lasting Hours Thermal socks made with 75% polyester, 15% Elastane,10% nylon. These battery socks are made of polyester material, deodorization, sweat absorption, breathable, comfortable and thick. High-quality materials, keep your feet dry and warm at all times. Great elastic, very suitable for men and women. Ideal Winter Gift Suitable for a variety of outdoor sports for cool or chilly days such as motorcycling, hiking, skating, climbing, camping, skiing, fishing, hunting, walking the dogs etc. Heated socks come with a Exquisite Gift Box, it's an ideal warm heart gift for Birthdays, Christmas, for you Family,Parents,Friends or any one you loved in Cold Weather. Let’s enjoy warm winter with others. Read more Heated Gloves Liner Heated Gloves Heated Mittens Battery Pack Windproof Heated Liners Heated Lower Back Massager Battery Included ✓ ✓ ✓ ✓ ✓ ✓ Battery Type Rechargeable lithium ion battery Rechargeable lithium ion battery Rechargeable lithium ion battery Rechargeable lithium ion battery Rechargeable lithium ion battery Rechargeable lithium ion battery Battery Capacity 7.4V 2200 mAh 7.4V 2200 mAh 7.4V 2200 mAh 7.4V 2200 mAh 7.4V 2200 mAh 7.4V 4400 mAh Temperature Adjustable 3 heating levels 3 heating levels 3 heating levels 3 heating levels 3 heating & vibration levels