Purchased on 9/18 at the Alpen Fukuoka store. Worn a few times, with corresponding signs of use and color transfer, but I think it's still perfectly usable. It was a bit too tight for me, so I'm letting it go. Will ship in simple packaging. The following is quoted from Alpen Store: ------------- ◇ The IDATEN special edition compression socks, which are the signature product of RETO. ◇ The ankle-length design favored by elite runners, "making trained legs look cool" (approx. 1cm shorter than the standard and big logo), prevents blisters on the heel while minimizing the weight from sweat absorption. These are 5-finger socks for competitive races with a prominent brand logo. ◇ Uses the patented technology (Patent No. 6268238) of "IDATEN Socks" developed by Unival Co., Ltd., a honeycomb structure. Achieves a soft constriction from 6 directions and high durability. ◇ Anti-slip: Uses a material called Down Stop R on the forefoot to reduce friction and enhance grip without using silicone. Also prevents the foot from sliding forward. ◇ Arch support: Achieves arch support with a V-line on the sole. ◇ Quick-drying and absorbent: Uses a special 100% polyester yarn as the raw material and a mesh knit at the base of the foot to achieve quick-drying and absorbency. ◇ Mid-length: Prevents chafing around the Achilles tendon when wearing thick-soled shoes. ■ Color (manufacturer's notation): White (White) ■ Material: Polyester, Nylon, Others ■ Toe type: 5-finger ■ Size: M: 24-26cm ■ Country of origin: Japan ■ 2025 model