When diving cold water it’s important to keep your extremities warm, particularly hands and feet. The K2 sock is designed to be worn inside drysuit boots to keep feet toasty warm during those extended bottom times. Made from the same K2 fleece that you find in SCUBAPRO’s K2 drysuit undergarments, the K2 sock is breathable and stretchy for maximum comfort as well as warmth, and the high-cut design covers a lot of ankle area. They are compatible with all kinds of drysuits.