Calabria Hydrotac OPTX 20/20 Stick On BiFocal Reading Lenses Magnifying Adhesive Lens Stick-On Sunglasses Magnifier Reusable

These work so well! So much cheaper to use these in sunglasses vs getting a prescription bifocal from optometrist. We live in a very sunny climate & have them on all our sunglasses. A little patience is needed when applying bc of air bubbles. We’ve been ordering these for the past 6 years.

I’ve been using Hydrotak stick on bifocals for years. Recently purchased a new pair. Something has changed. These will not adhere to the lenses of my sunglasses. They pull away as others have shown. Very frustrating.

These stick-on-with-water magnifier lenses work! I tried two other brands (stick on dry and using water) and neither one worked - corners began loosening within an hour of application to my glasses. But this brand stays secure to the curve of the glasses and vision magnification is clear.

The product itself is great my only problem was installing it on my glasses. After fussing with I was able to get it to stay on. Hoping that it stays in place,if there is any problems I will review this again.

If you can get them to stick they do work as advertised. Per the instructions these adhere using a little bit of water but it is super challenging especially on a curved lens. When you do get them to stick it ends up being in the wrong place and you have to start over.

I bought a set of these stick on lenses, through I had some initial difficulty, although through some trial and error the lenses adhered to my sunglasses. I use these sunglasses in the pool. They are magnificent, so awesome to be able to read my vitals on my watch while doing exercise. (Over 40 crowd here, lol) Occasionally a bubble will appear where I expect some residual water from being the pool loosens the grip, I just apply a bit of water, press down to push out the bubble and let set awhile to stay put. It is easy enough to pull off and reapply.I ordered another set as I wanted to apply some to my driving sunglasses. The newer lenses, didn't work at all. After exhausting every method I tried earlier and looking online for support, I gave in and contacted support. As an IT professional, I troubleshoot things excessively before I ever reach out for help.Customer service required several steps, photos, etc. Although initially I didn't feel they were responsive, apparently we both had misunderstandings. They replaced the defective lenses, and the new set worked the second try.The lenses to peel up on the edges when drying completely on some glasses. After the night, the lenses lifted slightly along the thickest edge. I found I can just press and hold the lens and sunglasses lens for a minute and they adhere.If you have issues, contact the manufacturer. I suspect the bad set got too old in a warehouse, or too hot during delivery, or sitting in the Amazon Locker. Who knows, the replacement work just as great as my first set.Expect to contact support on a few occasions, I don't think you get the same person each time, so keep the email thread.

I was having problems with StickTite lenses and read some reviews saying Hydrotac was better. Thought they were - got them to adhere well and without bubbles. But when I went to use my sunglasses a day later, they were pulling away from the lenses and had bubbles. With all my practicing from putting on both sets of lenses, my technique had improved so I tried the StickTite ones one more time, and they seem to be doing better, even a week later. So... returning the Hydrotacs. They are a little thicker than the StickTites (neither are not very high quality for clarity, tbh) so if you have lenses that are completely flat, I could see the Hydrotac working in that scenario. Lesson learned: don't buy fancy non-bifocal sunglasses if you need bifocals.

These used to work well but after buying 3 sets in part couple years they do not set up like they used to. Air gaps always appear and they often come loose. I can't get them to fit my dunno any longer. My glass haven't changed, these have. A few years ago they were great but no longer. Customer support was useless.