These thermal socks from C-Skins are a favourite amongst bodyboarders and snorkellers for winter sessions. Used inside a fin or flipper, these socks prevent abrasion and keep you cosy. These socks are also used daily through the winter by open water swimmers who need some extra insulation but don't want a bootie. >Glued and Blindstitched Seams>4mm Free Flex neoprene>Reinforced kevlar sole>Thermotech Polypro lining>Ideal for swimming or for use with dive or bodyboard fins *SIZE TIP* even though these should be a snug fit, they are slightly small size wise…if you are a half size, or vary between a full and half size then you should choose the larger size.