Recommended Running Socks for Marathon, Trail Running, and Running High-performance Japanese-made socks with arch support and ankle reinforcement. Set of 2 pairs - Brand: RxL - Color: Black - Size: M (24-26 cm) - Made in Japan - Features: Arch support, ankle reinforcement, toe reinforcement, instep support These are merino wool socks from R×L (RxL). Merino wool has high heat retention and excellent moisture absorption and quick-drying properties, so it keeps you cool when it's hot and warm when it's cold, maintaining your body temperature. It also has an anti-odor effect and is suitable for outdoor activities and everyday use. These are Japanese-made socks carefully made to fit the Japanese foot shape! Not only are they comfortable to wear, but they also maximize the original functions of your feet, making them "socks you can run in"! ☆ Toe strength up The toe area has been reinforced with nylon thread, which many users requested, to improve the durability, which is a challenge for merino wool. ☆ Achilles tendon strength up The Achilles tendon area, which is prone to rubbing with shoes, is also reinforced with nylon thread. The vertical lines are gathered in the center for excellent stability. ☆ Instep foot air manufacturing method The fabric of the instep is made as thin as possible to improve the fit of the arch while providing a natural sense of support. If you don't like the strong support of TBW-900, TMW-37 is recommended. Thank you for viewing. Reference price: Rakuten 2600 yen / 1 pair Please use the price reduction request for price negotiations.