Industry Firsts After testing all the other swimming socks on the market, Zone3 found that they nearly all filled with water and easily slipped off the foot when swimming. A design solution was found by increasing the length of the sock so it could be tucked into the wetsuit to ensure no exposed skin and adding a Touch closure strap around the top to keep the sock in place to reduce the amount of water that enters the sock. Protection The under-sole is also made from a durable and gripping fabric to help with protection and control when walking to or from the water whether by the sea, lake or river.