Beast Fang Mouth Guard with Free Storage Case by Warrior Mouthguards Boil and bite fit. Great suction creates the ease to breathe and talk Ergonomically designed shape that molds better at lower temperatures for customized fit Controlled thickness in key areas provides optimal protection. Advanced application process ensures graphics long-lasting wear ILL GRILLS brand is the closest fit to a customized guard at a great value. Includes FREE ILL GRILLS mouth guard case