Hollis M-1 Mask Galileo 2 Sheath may be secured to

Sheath may be secured to your BCD (via grommets)

The result of careful studies and tests both in the laboratory and in the field

of steel and aluminum alike

Dual-Lens Design

extra durable polyester mesh

Hollis M-1 Mask Galileo 2 Sheath may be secured toM 1 Mask Visibility is the most important aspect of any dive and the M1 Mask raises the bar for optical quality and distortion free vision. This lens is an extra clear glass which is 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 makes the lens distortion free and helps improve color and visibility in low light conditions