I bought it and kept it without using it. I only took it out once for the photos. Please understand that this is home-stored and inspected by a non-professional, and purchase accordingly. If you are concerned, please refrain from purchasing. [Product Description] This mouthpiece can be fitted perfectly by soaking it in hot water. It is a necessary item to protect your teeth during intense sparring and matches. [Size] Free [Color] Clear [Material] EVA Thank you for viewing.