Hollis M4 Frameless Scuba Diving Mask - Black

By Hollis | Part # 205.4800.07 | Frameless Low-Volume Design | Saint-Gobain Crystal-Clear Glass

Maximise your underwater peripheral vision without unnecessary bulk with the Hollis M4 Frameless Scuba Diving Mask (205.4800.07). Engineered for technical and recreational divers who demand clarity, durability, and a secure seal, the M4 fuses its premium optical glass lens directly into a soft silicone skirt—eliminating rigid plastic outer frames.

Equipped with genuine Saint-Gobain Diamant crystal-clear tempered glass, the M4 eliminates the green tint caused by iron impurities found in standard floating glass lenses. This ensures superior light transmission and true-to-life colour representation in low-light environments, whether exploring British Columbia's coastal reefs, deep wrecks, or technical caves.

Key Features and Highlights

• Frameless Direct-Bond Construction: The soft silicone skirt bonds directly to the lens, creating a rugged, streamlined profile that stows easily in drysuit cargo pockets as a primary or backup mask.
• Saint-Gobain Diamant Tempered Glass: Optical-grade, low-iron glass provides undistorted visibility and true colour transmission in dark and temperate waters.
• Ultra-Low Internal Volume: Close lens placement makes clearing water fast and requires minimal air displacement during deep descents.
• Comfort-Fit Double Feathered Edge: 100% pure surgical-grade black silicone skirt creates a leak-free seal across a wide variety of facial profiles.
• Easy-Adjust Buckles Mounted to Skirt: Swivelling quick-adjust buckles attach to the skirt rather than a frame, reducing drag and stress on the face while allowing quick adjustments with drysuit gloves.

Technical Specifications