YOSHIRO SOCKS Yoshiro Socks Size: M 20-25cm Made in Japan Set of 2 Gray ※The image appears to be close to black, but the actual color is a dark gray, like charcoal gray. I bought these for my child, but they don't like five-finger socks and won't wear them, so I'm selling them. Purchased at the regular price from the official website. Both have been worn about twice. There is a feeling of wear, but no pilling, tears, or fraying. The following is an excerpt from the official website: Made with ultra-high-density fibers, about 1/20th the thickness of hair, and only 2mm thick. Strength is 6-10 times that of ordinary socks. Cleared over 9,000 cycles in abrasion tests by public institutions. Aligns muscles, joints, and posture, supporting overall beauty and health. All processes, including fiber, dyeing, sewing, embroidery, packaging, and packing, are completed in Japan. Color...Gray系 (Gray-based) Pattern/Design...Solid Sock Length...Short/Ankle Length Stains, tears, odors, etc....None