Black silicone cap made by Mizuno, with the JSS logo. - Brand: Mizuno - Color: Black - Design: JSS logo - Material: Silicone Thank you for viewing. The size is free size, as it says "F" on the inside. It has been used a few times, so there is some water stain on the inside. Please understand that some dust may be present due to the material. I am not considering lowering the price yet as I have just listed it. Thank you for your understanding. You can purchase it immediately.