ScubaPro Universal Go Pro Mask Mount Swimming Gear This particular model uses a

This particular model uses a percentage scale

The Easy to Reach Locking Oral Inflation Valve for fast and safe inflation

The drop-in lens filter resides in front of the mask's permanent lenses

The fin pocket is made from a soft elastomer for added comfort

they also are excellent all-around water shoes for navigating rocky beaches or river bottoms

ScubaPro Universal Go Pro Mask Mount Swimming Gear This particular model uses aDesigned to accommodate SUBGEAR and SCUBAPRO dual lens masks. Designed to accommodate SUBGEAR and SCUBAPRO dual lens masks. Allows for easy, secure installation without any drilling or destruction of the mask. Fits other manufacturers two pane masks as well provided the frame is separate from the rubber