Hollis M4 Mask
When choosing a mask, fit and field of vision come first. The M-4 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.
M4 Mask Features
- Frameless silicon skirt
- Rugged mask box and adjustable mask strap included
- Increased vision and low volume