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hhh Sisu Tether Adult Mouth Guard

Sisu Tether Adult Mouth Guard

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Easy, effortless fitting!

Secure connection to your helmet!

SISU Mouthguards are known for their unmatched protection, comfort, cleanliness, and remoldability. Though it might not seem possible, we made an even better mouthguard! SISU Tether uses the newer SISU 3D design that improves on previous SISU models, and adds a number of new features:
  • Pre-formed guard for an effortless, fast, fit and go shape
  • Includes a tether to attach mouthguard to helmet cage
  • The SISU Tether features a quick-release mechanism to ensure safety of the athlete in the case of a helmet-removing contact, or in case of training personnel assisting a downed player needing to remove the player's helmet
  • Variable material thickness to put protection where it is needed, and comfort where it is desired


  • 2.0mm thin
  • Pre-formed for an easy, perfect, custom-molded fit every time
  • For athletes over 5' tall
  • Works with braces 
  • Non-toxic: BPA, BPS, Latex, PVC, Phthalate free



    Using revolutionary Diffusix™ technology, SISU Mouthguards are 8 times tougher and 30-50% stronger than conventional mouthguards. You’ll be able to start each game with confidence knowing that no matter how hard you hit, your SISU is there to protect you.


    A mouthguard shouldn’t be something you dread having to wear because it’s uncomfortable. In contrast to the large, clunky guards you’ve come to expect, every SISU is a super-slim 1.6-2.4 mm thin. They’re so small that you’ll honestly forget you’re even wearing a mouthguard!


    SISU provides a comfortable custom fit that allows you to keep your guard in your mouth the entire game or practice. You don't need to constantly remove your guard to talk, breathe or drink. This means that fewer germs will be transferred from your dirty, sweaty hands to your SISU Guard.