Root Your Feet: Keep your feet comfortably warm before and after yoga. The soft fabric is knitted with organic cotton, and the sole is extra soft for cushioning with every step. The socks are Oeko-Tex certified and sustainably produced in Portugal. These socks are made from 75% organic cotton, 20% polyamide, and 5% spandex, and their elasticity allows them to adapt to any foot. The fabric is Oeko-Tex Standard 100 certified. The insole is extra soft, featuring a double-woven layer that cushions every step. The socks are one size fits most (36-40). Their elasticity allows them to perfectly adapt to any foot shape. The socks can be washed at 40°C without fabric softener or bleach. Do not tumble dry; hang or lay flat to dry. This will help protect the environment and extend the life of the socks.