Cressi Tough Sock 3mmDESCRIPTION Designed to be worn with full foot fins to prevent blisters or simply to provide warmth for your feet the Cressi Tough Sock 3mm are extremely comfortable. The inside of the sock is line with metal lite which makes the socks easy to slide on whilst the soles have an effective non slip coating providing protection on slippery surfaces. TECHNICAL INFORMATION 3mm Sock Metal lite lining Non slip coating on soles