Protect those teeth with a SISU mouthguard from Lucky Skates. We wear and recommend SISU mouth guards. Experience a thin, strong, moldable mouth guard that offers both protection and comfort. SISU is leading the way in the sports mouthguard revolution. Common sports wearing this mouthguard include AFL, roller derby, lacrosse, soccer and more. When we say you can talk, breathe and drink with this mouthguard in, we are speaking from experience.