The Hollis M1 Mask provides every thing that you could want in a diving mask, ultra low profile design, super soft superior quality silicone skirt, frameless construction for improved field of vision and reduced weight and optical grade glass for improved clarity and light transmittance.
The M1 Mask uses Saint-Gobian Diamant crystal clear glass that has a significantly lower iron component that standard glass. This reduction in iron removes the green tint that is often apparent in cheaper glass and allows more light to filter through the glass without being reflected back out by the impurities. Colour distortion is also improved, giving true colour representation.
Hollis M1 Mask Specification
Frameless 100% pure silicone skirt
Saint-Gobain Diamant - Crystal Clear Lens
Wide vision and low volume
Hollis Mask M-1