Swim socks are essential when you are swimming in extremely cold water. The 2mm neoprene maintains an ideal body temperature, protecting your feet from the cold. They also have an antislip sole to stop you from sliding about on the rocks.
The 2mm neoprene helps keep you warm so that you can swim for longer.
The length of these swimming socks allows for a greater overlap with your wetsuit. The antislip sole makes them safer when walking on slippery surfaces.