Is a full neoprene cap too claustrophobic? Then a neoprene headband is the solution for you. This ION Sonic headband made of neoprene has everything you want. The cut-out of the ION Sonic headband is exactly the way that your ears and your head around your forehead stay warm. At the back is a Velcro fastening so that everyone will fit the ION Sonic headband 3.0.