ZEROFIT® Heatrub Ultimate Socks

Made with newly developed moisture-absorbing and heat-generating yarn, it keeps you at a comfortable temperature even when playing sports without getting too warm. The part above the ankle is made with long brushed pile, and the part below the ankle is made with pile knitting to make it easier to wear with sports shoes. It has a moderate compression that is not too tight, making it comfortable to wear even for long periods of time. The gentle pressure helps prevent swelling in the feet.  It tightens the arch of the foot (with strong compression on the inside) and prevents muscle relaxation, which can cause fatigue. It also prevents the arch from collapsing, making it recommended for people who work standing up or who move around a lot. ZEROFIT's unique grooved, uneven structure (air ventilation) creates airflow inside the shoe, reducing stuffiness and keeping your feet fresh. It also has a massage effect, helping to reduce fatigue. Size Chart Small (USA size 5-8, EU 37-40) Medium (USA size 7-10, EU 40-44) Large (USA size 10-13,  EU 44-48)