Description:KABAK long socks can be safely washed in a washing machine at maximum 40 degrees Celsius. However, remember that they are made mostly of cotton which may shrink a bit after the first washing. But do not worry - after re-washing, the socks should stretch back to the length of approx. 1/3 of the calf. We strongly advise you not to bleach, tumble dry, iron or dry clean your socks.Material: 80% Cotton 15% Polyamide 5% ElastaneWashing instructions: 40°C Machine wash. Do not bleach. Do not tumble dry. Do not iron. Do not dry clean.