Wash only. FoxRiver Redheel Kids Socks Approximately 15cm from toe to heel. Wash only, unused. I'm not sure of the size, but I measured it and it's about 15cm from toe to heel, so I think it's Kids S size, 15cm-17.5cm! Thick and sturdy, I think it will be warm. I think it probably contains merino wool. Recommended for snow play, skiing, snowboarding, etc. Please refrain from purchasing if you are sensitive to imperfections, as this is a personal inspection and home storage item. Shipping is planned via Yu-Yu Mercari (anonymous delivery). Please feel free to comment if you have any questions. Thank you. Fox River Red Heel Socks Socks Socks Climbing Outdoor Sock Monkey Monkey Monkey Around Lt Wt KIDS 15cm 16cm 17cm 17.5cm