C4 Zero Neoprene Socks (3mm, 5mm) The design of these neoprene socks has been developed down to the smallest detail. We have used different materials for each panel making these neoprene socks the most comfortable and resistant on the market. The panel of the instep is made with elastic lining, the panel on the fingers is warm and anti-cut, the on on the sole and on the heel is highly resistant to abrasion without any undesirable sewings. Zero features a left and a right.