Multiple combinations The socks are available in red, white and black. We have also prepared two sets of different colors for you, you only get two pairs for an affordable price! Convenient unisex socks in free size for 38 to 44 feet. Match easily with everyday clothes. Warming feet Foot warming products are high-tech products made of tourmaline as a core and combined with functional nanobiological materials. The spots on the socks are tourmaline, which resonates with the magnetic field of the human body. And thanks to the body's own energy can continuously release thermal energy, negative ions, far infrared produce deep thermal effects. Foot care Traditional Chinese medicine believed that when people get older, their feet wither first. All the organs of the human body can find the corresponding reflection zone on the foot, and the massage of the corresponding reflection zone can relieve the pain of the corresponding organ. Put on our socks, the tourmaline massage points that cover all the acupuncture points of the feet are groomed to take care of your health. Exquisite stitching Fine finish of the mouth and toes of the sock, high sewing force and high elasticity. By pulling, you can feel the soft texture of pure cotton without any tension. Blade scratch test: the blade slid across the fabric smoothly without snagging the thread. Providing you with maximum comfort. Versatile Stopper socks for a safe and secure fit during any workout or activity. Great for barre, Pilates, yoga, ballet, trampolines, work or slippery floors. It can constantly release thermal energy for you during the cold winter. Use it in case of fatigue to improve human microcirculation, accelerate metabolism and quickly relieve fatigue.