These socks are exclusively available for purchase by holders of fan club-exclusive streaming tickets for Sakanaction's "Kaiju" Tour at K-Arena. These are unused, unopened, and in ladies' size. Thank you! Product Description Introducing the black version of the "SOCKS "Kaiju"" sold at SAKANAQUARIUM 2025 "Kaiju". The instep features "Sakanaction," and the heel features the tour logo, both regular and inverted. Available in two sizes: ladies' and men's. ■Size Size: LADIES Equivalent to 23-25cm ■Color Black ■Material Cotton, Acrylic, Others