Low profile dry top keeps water out;Ortho-consciously mouthpiece for comfort and reduced jaw fatigue;Angled purge chamber for efficient and easy clearing;Colors: Black (BK),Cobalt Blue (CBL), Fishtail Blue (FB), Flash Yellow (FY), Translucent (T)) Black Silicone: Black (QB-BK), Bronze (QB-BZ), Fishtail Blue (QB-FB), Hot Pink (QB-HP), Metallic Dark Red (QB-MDR), Siesta Green (QB-SG)