Hollis M4 Mask
Hollis M4 Mask offers great fit and field of vision. The M4 gives you the best of both worlds, fitting a wide variety of faces and offering superior peripheral and vertical vision. It is low profile, stows easy and carries an excellent value.
Hollis M4 mask provides that with distortion free vision and superior fit. Visibility is the most important aspect of any dive. This low profile design uses a rigid frame and two lenses with 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 underwater.
The low profile design of the mask allows the diver to use minimal air for mask clearing.