Hollis M1 Mask Halcyon Spare Parts Diaphragm first stages are historically

Diaphragm first stages are historically popular with cold water divers

you can quickly change your exposure suits or switch the system between different divers in a flash

It gives your suit the same protection your suit gives you

ensuring you can grip the knife easily

XDeep Stealth Weight System

Hollis M1 Mask Halcyon Spare Parts Diaphragm first stages are historicallyBlack Hollis M1 Mask Hollis M1 Mask offers a frameless design and distortion free vision. The lens is ultra clear glass valued for its attractive appearance and optical qualities. The low iron content produces a higher light transmittance and a reduced green tint inherent in other glasses. This frees the lens distortion and helps improve colour and visibility underwater in low light conditions. Mask features Frameless 100% pure silicon skirt Saint