This is a 100% brand new mouth guard with excellent quality _x000D_ Dual density structure, softer than other teeth protectors _x000D_ Heating snap-in design, more fit users tooth form. _x000D_ Groove fit the surface of the teeth, convenient to keep breathing smoothly and does not affect the protective effect of teeth during strenuous exercise. _x000D_ The mouth guard can reach to rear molars, to provide complete protection. _x000D_ ideal for paratrooper, judo, grapple, free combat, ice hockey, rugby football, BJJ, baseball and Muay Thai etc. _x000D_ How to use: _x000D_ 1.Put it to cup of warm water (70 to 80) till soft for about 10 seconds _x000D_ 2.If it is soft, insert it to your upper teeth in mouth _x000D_ 3.To memorize your mold of teeth, bite it 10~15 seconds _x000D_ 4.If it is fit to your teeth, clean it with water and use it _x000D_ 5.If it is not fit to your mouth, you can fix it again from step 1 _x000D_ Note: Setting the water temperature of 70-80 degrees is appropriate, soaking time should not exceed 10 seconds _x000D_ Size: Free Size (Approx. 7*6.3*3.5cm) _x000D_ Material: Silica Gel _x000D_ Color: White/Blue/Red/ Black/Orange _x000D_ Package Included: _x000D_ 1 X mouth guard _x000D_ 1 X Plastic box _x000D_ Notes: _x000D_ 1. Due to the difference between different monitors, the pictures may not reflect the actual color of the item. _x000D_ 2. Compare the detail sizes with yours, please allow slight difference due to manual measurement.