Calabria Hydrotac Dive OPTX Stick On Bifocal Lenses for Scuba Masks and Diving Goggles | Water Activated, Reusable Readers

A little tricky to get ‘em in place to stay. But once you do they’re great. And they hold up. Just finishing 10 days aboard a liveaboard in the Philippines. 4 dives a day. Constantly rinsing out and defogging my masks. Not one problem.

very disappointed. fell right off in the water. Lost it. not worth the money

Loved using these in my snorkel on my last vacation. I was able to actually see the ocean life up close. They are removable which was a plus because I didn’t like the first mask I tried so it was easy to transfer them to a second mask. I highly recommend!

Unfortunately I waited until after the return window to open the box. One of the lenses is warped and has what almost seems like a melt mark on it, in addition to a milky residue in places. Won’t rest flat on the inside of my mask at all. The other one rests flat, but also seems to have a bit of milky residue. I’m glad I purchased a bifocal mask as a backup, because it doesn’t look like these will cut it.

I'm working on my Advanced Open Water qualification. Today (July 2026) was the first time I used these. I installed them per the instructions. The instructions are to clean the mask and the lenses. Add a little warm water to the mask and smush the lenses on (on the inside obviously). There is no adhesive qualities to hold them in place. They feel like nice quality rubber, and I was hoping they would "cling" to the mask. I tried to avoid hitting them with mask defogger, but maybe I failed at that. Even though I had my mask on early, one lens was cocked at approx 90 degrees by the time we got out past the small breakers for our beach entry. Upon exit, I must have let my mask drag in the water a bit. Next time I looked, the lenses were gone.

Followed the directions and had 8 successful dives with these in place.

So I was so skeptical this would stay adhered considering how often masks are washed out. However after about 100 dives, they are still adhered to the mask.

These are junk. They don't stick to the lens and came scratched up out of the box.

helps me aee more under water