The M-28’s unique 2-window design offers exceptional visibility and low-volume comfort while incorporating our patented 3-D Strap and Round Edge skirt technologies. A newly designed skirt mounted Quick-Adjust Buckle System further enhances comfort and ease of fit. Additionally, the Geminus accepts RX Corrective Lenses for an easy transition to a optical lens mask. Simply, the Geminus leads where others will follow.


  • Lightweight composite frame for enhanced grip and shock protection.
  • Low profile, low volume 2-window design.
  • NEW skirt mounted Quick-Adjust Buckle System.
  • Patented round edge skirt for increased comfort and better seal.
  • 3-D strap for ideal anatomical fit.
  • RX Corrective Lenses available (See Below).

Geminus Mask

  • We can provide single vision lenses for the Geminus mask in -1.0 to -8.0 in half increments and +1.0 to +4.5 in half increments, and also Bifocal (Reading lenses) in +1.0 to +4.5 in half increments, either Right or Left lens. These lenses can be ordered on their own if you already have a Geminus mask, with the purchase of a mask if you wish to fit them yourself or we offer a lens fitting service.