Check the listing for details. SISU Aero Mouthguard Large Snow White Ultra-Thin Custom Fit Sports Protection. Color: White, Condition: New with tags, Made in United States. Listed at 18.00 USD. Size L, for larger mouths. New, unopened in package. The SISU Aero Mouthguard in size Large and snow white color is designed for adult unisex athletes requiring ultra-thin sports protection. Made in the United States, this mouthguard offers a custom fit for a comfortable and secure experience during sports activities such as boxing, martial arts, or MMA. With its aero design, this mouthguard provides added protection without compromising on comfort.Size L, for larger mouths. New, unopened in package. The SISU Aero Mouthguard in size Large and snow white color is designed for adult unisex athletes requiring ultra-thin sports protection. Made in the United States, this mouthguard offers a custom fit for a comfortable and secure experience during sports activities such as boxing, martial arts, or MMA. With its aero design, this mouthguard provides added protection without compromising on comfort.