Skip the boiling and break-in period with the Shock Doctor(R) Youth Insta-Fit Mouthguard. The dual layer construction offers protection with integrated breathing channel to allow for proper flow of oxygen. The Insta-Fit mouthguard is ready to use straight out of the package, just pop it in and play. Detials Youth: Age 8 and under No-boil or break-in required Elasto polymer offers outstanding comfort and protection Integrated breathing channel allows for the flow of air Convertible tether Perfect for any sport