TUSA Sport Optical Lens Mask Insert

I just used these yesterday while snorkeling in the Caribbean. I was so happy with them. They fit very easily in the mask that my tour provided me (so I'd imagine they'd fit in most masks, as these seemed pretty basic). The first time I used then, I forgot to defog them, so there was water between them and the mask. Second time, I defogged both the mask and the clip in lenses, and both were completely clear the whole session. I'd highly recommend these, as they're much cheaper than buying an Rx mask, and you'll actually be able to see what's in the water!

Great product and enables my son to go exploring in the waters without having to be blind underwater or at the beach thanks to being able to just insert these into the goggles he already had.

Your lab or mine could not put my script into this frame. Not good for anything other than a basic script

its ok. not sharp

Works great for snorkeling 👍

I do not trust this will stay in place. Also water will be between the lens and the mask glass so it will be like looking through your windshield in the rain without your wipers turned on. Custom RX masks to match your RX exactly is the way to go if you can afford them. Off the shelf standard RX lenses may or may not work with your specific RX....go to optician and they can show you what the standard offerings (+/-) will feel like and decide if that they are acceptable corrections.....Astigmatisms do not lend themselves to standard RX offerings at all so you will need to go custom.... just make sure you "Loooove" the mask first before investing in RX lenses for it which add a couple of hundred dollars to the final cost.

It does not fit well on my snorkel mask.

I actually highly disagree with this review. I personally own these because my prescription was so low, it was a tough decision to try & find a mask that fits well that also accommodates prescription lenses which are usually $80 on top the mask price. Other option as you mentioned is custom which is very expensive. These pop-in lenses are $15 and fit almost any mask from what I can tell unless the nose bridge blocks it. So even if you do let water inside your mask often and they end up not working for you, you have only spent $15. If they do work for you, that's an incredible savings. Personally, I haven't had an issue of water getting inside my mask.