OceanWays SeeSharp SL Mask & Snorkel Combo. 

Features: 

• SeeSharp High Definition Mask
• Sharpens underwater viewing
• Reduces distortion by defining faint edges
• Filters out UV and glare
• Caribbean Snorkel with Wave Guard deflector top
• “V” bite silicone mouthpiece and flex tube
• All the same great features as the SeeSharp Combo but in a single lens configuration.