EASY TO PUT ON - STAYS IN PLACE - Swimming Caps are made from a silicone that can be stretched considerably, making it easy to put on your head. It will then return to its original shape, fitting your head comfortably and staying in place, leaving you free to focus on what matters: swimming. SWIM FASTER AND IMPROVE YOUR PERFORMANCE - The unique, bubbled design of i-Swim Pro Swimming Cap displaces water surface tension, reducing your energy expenditure and maximizing your hydrodynamic efficiency. PROTECT YOUR HAIR FROM CHLORINE AND WATER DAMAGE - Our swimming caps fit snugly to your head, ensuring no water soaks through to your hair. The shape of the cap has been carefully designed to ensure all hair lengths are kept dry and protected.