The High Vis Neoprene Swim cap allows you to make yourself visible while protecting yourself from the cold of open waters. The high-visibility color allow you to make yourself visible even at a great distance, keeping you safe during your open water swimming sessions. The 2.5 mm thick neoprene provides warmth to prevent heat loss while swimming. The Velcro closure on the chin allows you to adjust the neoprene cap to the shape of your head, ensuring maximum comfort.