This is the ScubaPro Synergy 2 Trufit Single Lens Scuba Diving Mask Comfort Strap

Features:

• Main skirt offers a thin and soft silicone material for the best possible fit, seal and comfort against the skin.
• Outer skirt, made with firmer silicone, provides support and rigidity where needed.
• Rotating buckles work with a micro-adjustable strap to achieve a comfortable, watertight fit.
• Buckle tabs are flexible, enabling the mask to be folded flat for traveling.
• Ultra clear glass provides a bright and clear view of the underwater world.
• Comes with comfort strap.

Called the most comfortable dive mask on the market, you have to only try on a single lens Synergy 2 Trufit to feel the difference. Its Trufit Technology design incorporates not one but two separate silicone skirts - a thin, soft inner skirt for fit and comfort, and a thicker outer skirt to provide support near the mask frame. This innovative dual skirt design sets it apart from the original Syngery, and has proven to provide an entirely new level of comfort during extended periods under water while ensuring a reliable watertight seal on virtually all face shapes. This low-volume single lens mask also provides a wide and unobstructed field of view, and the buckle system is easy to use. The mask frame is spray painted for that premium look.