The non grip version offers the same supreme comfort due to the high-grade unique polyamide/cotton mix whilst the corrugated mesh upper allowing breathability, eliminating sweat build up. Stretch nylon upper provides guarantee the sock stays up at all times. Retains shape and original soft feel after many uses and washes. Mid-Leg Fabric:  70% Polyamide, 30% Cotton Product Name: Atak Shox Mid Leg Adult Socks - Black/White Option: UK Size 9-12