The LaoTzi brand 5000mAh rechargeable heated socks are designed for both men and women in sizes 6-13. These black foot warmers are perfect for keeping your feet and legs cozy during winter sports activities like skiing, snowboarding, and snowshoeing. With the convenience of being rechargeable, these socks provide consistent heat and comfort for longer periods of time, making them a practical and stylish accessory for cold weather adventures.