The TEPHRA MAX mouthguard is the company's top recommendation in terms of protection. It is certified at Impact Performance level 3 (the highest possible) and features the following technologies: - SHOKBLOKER - BOIL & BITE - GELFORM - FLEXICORE - AIRTHRU - SLIPSAFE The TEPHRA MAX is made from a hard SHOKBLOKER technology body for protection from front and side impacts, while for maximum protection it is reinforced with FLEXICORE technology. It features BOIL & BITE technology for improved fit, providing an amazing feel and comfort. The GELFORM liner technology offers impressive precision in the "molding" of the teeth. The AIRTHRU channel improves breathing when the jaws are closed, while the SLIPSAFE technology ensures that the mouthguard does not slip at all. All mouthguards are CE certified and also have additional certification from SATRA.