SISU Mouthguards The thinnest, lightest, strongest: SISU Mouthguard. Introducing the SISU™ mouthguard: an astonishingly thin, obnoxiously bright, boomerang-shaped hunk of technology – revolutionizing mouthguards across the universe by offering more protection and less mouthguard. Youth or adult, braces or not, for high-impact sports or a pick-up game in the backyard – Akervall Technologiess' complete line of high-tech SISU guards are the ultimate athletic mouth shields you once thought too good to be true. SISU means MORE PROTECTION and LESS MOUTHGUARD. Fightstore Ireland is excited to bring this new product to our loyal customers.
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