Our patent pending product will help extend your swim cap, which helps to keep your hair dry underneath of your cap. Simply slip this specially made headband in place and pull it down over the hairline to help seal out the water when you swim. Any of your swim caps can be worn over the top of this product. The hair guard can also help to provide additional water protection over your ears. Made from 100% silicone and comes in a variety of colors to match or blend with your swim cap. U.S. Patent #20140026284.