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 at an affordable price Free size practical unisex socks for 38 44 feet. Easily match with everyday clothes.Foot Warmer Foot warmers are high-tech products made of tourmaline as the core and combined with functional nanobiological materials. The spots on the socks are made of tourmaline, which resonates with the magnetic field of the human body. And through the body's own energy can continuously release thermal energy, negative ions, far infrared produce deep thermal effects.Foot care Traditional Chinese medicine believes that when people grow old, their feet wilt 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 managed to care for your health.Exquisite tailoring Fine workmanship of the mouth and toes of the sock, high seam strength and high elasticity. When pulling, you can feel the soft texture of pure cotton without any tension. Blade scratch test: The blade glided over the fabric smoothly without snagging the thread. Giving you maximum comfort.Versatile Stopper socks for a safe and secure step during any workout or activity. Ideal for barre, Pilates, yoga, ballet, trampolines, work or slippery floors. It can permanently free you from heat energy in the cold winter. Use it in case of fatigue to improve human microcirculation, accelerate metabolism and quickly relieve fatigue. Produced by yougang