SISU 1.6 Aero Guard - Medium size -

Sisu mouthguard, one of roller derby's most popular mouthguard.  As invisible and ultralight as the air for which it was named, SISU Aero is the 1.6 mm high-tech mouthguard that started it all. Designed for athletes who prefer to easily talk, breathe and drink during game time (otherwise known as: all athletes), the Aero is revolutionizing mouthguards one mouth at a time.