Color: Black & Blue interior Includes mouthpiece case This mouthpiece fits snugly, doesn't come off, isn't stuffy, and has just the right thickness that doesn't get in the way! To mold it, simply dip it in boiling water for about 10-15 seconds until it softens and becomes slightly pliable. Then, place it on your teeth, adjust it, and gently bite down to form it. It's easy to make! If it doesn't fit perfectly the first time, you can repeat the process 3-4 times to achieve a complete fit! As a special limited-time offer, we're including a "How to Make Your Mouthpiece" instruction manual for first-time users, And! We're also including a plastic case, which we normally sell for 600 yen, as part of this set! Please choose from the following colors: Blue Green Pink Yellow White Purple Dark Blue Black Skeleton Case If no color is specified for the mouthpiece case at the time of purchase, we will ship either a skeleton case or a colored case. Suitable for everyone from beginners to advanced users, and can be used for various sports! When your bite is aligned, your physical abilities and strength can improve, leading to enhanced sports performance! Mouthpiece Mouth guard Sports Martial Arts Mixed Martial Arts MMA UFC Bellator ONE FC RIZIN PANCRASE DEEP Shooto Judo Wrestling Boxing Kickboxing Rugby Jiu-Jitsu Weight Training Weights Basketball Plastic Case Mouthpiece Case Mouthguard Mouthpiece