The TUSA Sport UC0110 Mask and Snorkel Combo includes a low volume 1-window wide view mask with round edge silicone skirt, the EZ buckle system, and tempered glass lenses. The semi-dry snorkel features TUSA exclusive Hyperdry Elite technology that reduces water flow into the snorkel, a drain chamber and purge valve for easy clearing, and a food grade silicone mouthpiece. Features Mask Fitting: Adult Small to Medium faces. Pure Silicone: FDA regulation compliant. ClearVU Tempered Glass: Superior clarity, colour, and transmission of light. EZ Strap Buckle System: Quick and easy adjustment with minimal effort. Hyperdry Elite Semi-Dry Top: TUSA's exclusive semi-dry top for snorkels. High Flow Purge: Purge valve for clearing water. Snorkel Clip: 10-Step Slide Adaptor.