Hollis M-1 Mask raises the bar for optical quality and distortion free vision. The extra crystal-clear Saint-Gobain Diamant tempered glass single lens is valued for its attractive appearance and optical qualities. M-1 Mask provides a wide field of vision with a low internal volume making it extremely easy to clear. The 100% pure silicone double feathered edge skirt and wide split style mask strap combine for a perfect seal and comfort on the face.
The M-1 frameless design makes it easy to stow in a BCD pocket, so it can also be used as a back-up mask if required.
The mask comes with a protective mask box for storage.