The Shock Doctor anti-microbial mouthguard case is an antibacterial, heavy-duty ventilated case with an athletic bag attachment system that provides secure, clean storage for your mouthguard. It's designed to work with any strapped and strapless Shock Doctor mouthguard. Features: Secure, clean anti-microbial material Heavy ventilation promotes fast drying Gym bag carabiner attachment for easy access Shock Doctor