Keystone - ProForm - Niteguards (12/Pk)Protects against intra oral trauma Prevents deformation Displays high durability Niteguards provide better abrasion resistance for maximum protection of tissues, bones, and teeth. They are dual layer materials composed of two soft surfaces that exhibit excellent endurance from bruxing over traditional soft sheet materials. Eliminate common allergy related complications with a latex , BPA , gluten , and monomer free formulation.