We made socks with soft and warm material. ＜Size＞ M about 22ｃｍ～24ｃｍ L about 25ｃｍ～27ｃｍ ＜Material＞ Acrylic 70.3% Wool 23.7％ Nylon 5.4％ Polyurethane 0.6％ Made in Japan The knitted toe socks obtained by special knitting method may shrink in the wash. No problem to wear. If you find some yarn come out,do not cut off or if not,they may loose yarn or get holes. For 100% silk or wool ,part of the heel or fingers may become thin and worn to its delicate materials. Use a mild detergent. Machine wash gentle delicate. ( better in washing net) Do not bleach. Do not tumble dry. Smooth by hand.