Open Box Hollis M4 Frameless Low Volume Scuba Diving Mask off-map And sometimes gear needs adjustment

And sometimes gear needs adjustment mid-dive

The Rogue Back Assembly offers versatility with 3 different sizes to choose from

and night dives

Operating temperature ranges from -10°C to +50°C

enabling you to swap from an open-heel setup to a premium Monprene® full-foot pocket for warm-water diving

Open Box Hollis M4 Frameless Low Volume Scuba Diving Mask off-map And sometimes gear needs adjustmentWhen choosing a mask, fit and field of vision come first. The M4 Mask 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.