These are seven-piece clasp Oka tabi (split-toe socks). The dye comes off just by touching it, and the indigo color has transferred to the soles. 《Washing Instructions》 ① First, rinse with water. ② Use a neutral detergent; do not use special detergents. ③ Wash separately from other items. ④ Do not soak in water for a long time. ⑤ After washing, it is best to gently wring it out, turn it inside out, and dry it in the shade. Although unused, they have been stored for a long time. Please purchase these items only if you understand the characteristics of indigo-dyed products and the above instructions. Items will be shipped in simple packaging. * Shipping will be closed on Saturdays, Sundays, and holidays. Tabi Oka Tabi Aizome (Indigo Dye) Seven-piece clasp Indigo Dye N1860