These socks are exclusively available for purchase by members of the Sakanakushon fan club who have tickets for the "Kaiju" tour at K-Arena. These are new, unopened, and are the ladies' size. Price is not negotiable, thank you for understanding. Product Description: Introducing the black "SOCKS "Kaiju"" sold at SAKANAQUARIUM 2025 "Kaiju". The instep features "Sakanakushon" and the heel displays both the reversed and regular tour logos. Available in two sizes: ladies and men's. ■ Size size: LADIES Equivalent to 23-25cm (Japanese shoe size) ■ Color Black ■ Material Cotton, Acrylic, and other materials