Unisex Available in European sizes 35 - 38, 39 - 42, or 43 - 46 Made of 71% cotton, 27% polyamide, and 2% elastane for flexibility Every person needs an essential pair of socks in their collection and the ECCO CLASSIC LONGLIFE IN-SHOE SOCK 2-PACK takes care of all your needs - quality, durability, and contemporary style. These socks have a unique cut that allows for coverage with space for movement and airflow. Silicone strips at the back of the heel prevent slippage. With the ECCO CLASSIC LONGLIFE IN-SHOE SOCK 2-PACK, you get two pairs of socks made from a super-soft blend of cotton and polyamide fibres for uncompromising comfort. OEKO-TEX® Standard 100 certified for no harmful chemicals to humans used Two solid black pairs per set