HIGH QUALITY - Our dual-layer sports mouthguards give you the best custom fit (inner gel layer) and impact resistance (outer impact layer). Not all double layer mouthguards are the same and our materials are different. We spend years of testing to finalize the design and material that is suitable for professional athletes or your future youth superstar. You may not be able to tell the difference ULTIMATE CUSTOMER SERVICE - We want to sell our sports mouthguards worldwide because our professional athletes ask us to. We have just started selling on Amazon DE/FR/IT/FR/ES but we already have a lot of good reviews on Amazon US UK (go to the bottom of the page for more).Please make sure you follow the instructions to get the best fit experience HAS UNDERGONE ALL NECESSARY SAFETY TESTS - The strapless mouth guard is made of high quality BPA-free silicone. Your safety is our ultimate goal. BPA free! Latex-free! Phthalate free! We have successfully passed all security tests. of medical grade materials. Super easy to follow and adult and youth mouth guards give you maximum protection for Karate, Lacrosse, Hockey, Football, Field Hockey, Rugby, Roller Derby, A < p>Size problem? Unlike shoes, there are only two sizes (adult and junior) for boil and bite mouth guards, which fit most ("NOT" all) customers. Some experienced customers know how to trim the mouth guards if they are too big.