IST MP201 Anti Fog Proteus Low Volume Diving Snorkeling Mask

Quick answer: The IST MP201 Proteus is a low-volume mask with IST's anti-fog lens film and a larger field of view than many masks. Its buckles mount directly to the skirt rather than the frame, which IST notes helps divers with a wider facial profile.

Why bigger divers look at it

On a lot of masks, the buckles sit on the frame and stick out past the skirt. On a wider face, that hardware can press into the sides of your head or pull the skirt at an awkward angle. Putting the buckles on the skirt keeps them out of the way, so the strap pulls straight back and the seal stays even.

The lenses sit close to your eyes, which is how IST opens up the view while keeping internal volume small. That makes the MP201 easy to clear and a good fit for freediving too.

About the anti-fog film

Fog is one of the most annoying things in diving, and spray only lasts a dive. IST's anti-fog lens film is built in. Before your first dive, peel off the matte protective film inside the mask. After that, just rinse with water before each dive.

What you get

• Super low-volume design, good for scuba, snorkeling and freediving
• Built-in anti-fog lens film
• Larger field of vision with lenses close to the eyes
• Skirt-mounted buckles that don't interfere with fit
• Painted finish in several color options

Options

• Colors: Black/Black, Clear/Blue, White/Purple

Before you buy

Care matters with an anti-fog film. Clean with fresh water only, no detergent or cleanser, and keep it away from scratches, cuts and high heat like a hot car dashboard. Fit check: hold it to your face without the strap and breathe in gently. It should stay put without pressure. Read How to Fit a Dive Mask. More options: Wide-Fit Scuba Masks for Larger Faces.