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 Convenient free size unisex socks for 38 to 44 feet. Easily match with everyday clothes.Foot WarmerFoot warmer products 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 careMedicine Chinese tradition believes that when people age, their feet wilt first. All organs in the human body can find the corresponding reflective area on the foot, and massaging the corresponding reflective area can relieve the pain of the corresponding organ. Put on our socks, the tourmaline massage points covering all the acupuncture points of the feet are managed to take care of 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. Providing you with maximum comfort.VersatileHalter 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 release heat energy to you in the cold winter. Use it when fatigued to improve human microcirculation, accelerate metabolism, and quickly relieve fatigue.