Featuresthickness 16mmbpa latex pvc phthalate freefda compliantredesigned perforation patternremoldable custom fitmaterialsnon compressible thermo polymersisu nextgen is the most powerful mouthguard our scientists have ever built with its unmatched quality and functionality sisu nextgen was designed with the athlete in mind made from non compressible thermo polymer sisu nextgen is engineered to withstand even more impactstill astonishingly 16 mm thin sisu nextgen delivers even more