The Hollis M1 is perhaps one of the best masks on the market. Quality in all parts, and a very comfortable fit. A frameless mask popular with technical divers, a top mask for sport diving and snorkelling. The mask has extra clear glass (Saint-Gobain Diamant) which reduces the greenish tint seen through normal diving masks combined with a large field of vision.
Features and characteristics
Frameless mask.
Saint-Gobain Diamant crystal clear glass without color distortion.
Large field of view and low volume.
Soft silicone skirt with mesh strap in the same material.
Adjustable mesh strap, with a simple system. Easy to adjust the elastic even when under water.
