Size: Free Size Color: Black Please comment if you want multiple! Red is out of stock! Tourmaline Massage Socks: Self-heating magnetic tourmaline socks! Material: Tourmaline, Polyester Cotton Type: Tourmaline Socks Massage Socks: Healthcare Socks 1. Made of high-quality polyester cotton, soft, comfortable, and long-lasting! 2. The bottom of the socks has a tourmaline design that can self-heat to warm and relax your feet! 3. Tourmaline socks self-heat the feet, remove moisture, stop odor, reduce swelling in legs and feet, exfoliate skin, generate static, inhibit bacteria, keep warm, dehumidify, eliminate foot odor, ventilate, and significantly improve athlete's foot! Great for skiing, snowboarding, winter sports, winter golf, and outdoor work. Made overseas, so there may be slight fraying, scratches, or errors! I think it's not a big deal, but please be aware of this. #MagneticSelfHeating #MagneticSocks #WarmSocks #SelfHeatingSocks #HealthcareSocks Color: Black Pattern Design: Solid