Hydrotac Stick On BiFocal Reading Lenses Mens Womens Clear Magnifying Bi-Focal Reusable Reader Adhesive Stickers

I bought these to add to my Cressi Dive mask. I noted in the description that they could be trimmed to fit but was hoping I wouldn't need to. but they fitted perfectly. On land they work a treat, haven't tested underwater yet but I'm sure they will be fine. Simply to fit to the original lense and once allowed to dry fully they're attached firm.

C'est la troisième paire que j'utilise. Il faut impérativement bien lire les instructions de positionnement et respecter les consignes. Si ces conditions sont respectées, le produit est simplement parfait. A la longue, les bords se "décollent" un peu, il suffit alors de retirer les Hydrotac, bien nettoyer le support (les verres des lunettes de soleil, le masque de plongée, ...) et recommencer le positionnement comme au premier jour. Les critiques négatives proviennent de personnes qui n'ont pas lu les consignes ou ne les appliquent pas; dans ce cas là, effectivement, les Hydrotac ne tiennent pas en place, car la procédure doit être appliquée à la lettre.

Lenses work well. I use it in my diving mask. Easy to loose after rinsing. Need some glue for use in water conditions.

Well, been old for a while, but now there's proof based on my Amazon purchase history. But regardless of the march of time, this has proven to be a very handy product. I use it with my current glasses (put them on a spare pair) for reading small print, such as newspapers and some magazines (which, for some reason, always seem to want to print things in 8 or 9 point type when it's clear that most of their readers are well over the age where they can read such small type. Then they wonder why circulation is falling.) Sorry for going off on a tangent. Back to the stick on lenses. They work great. Had no problems putting them on my glasses. The pack did not come with directions, but directions were available on the manufacturer's web site. Basically, clean your glasses well with very warm water, then soften the stick on lenses with warm water, stick them on, push out any air bubbles, and let them dry. The lens have a curved side which is the side you want to affix to the glasses. So far zero problems with them coming off. Clarity is excellent. They are noticeable on regular glasses - I expect they would not be noticeable (or hardly at all) if you used them with sunglasses. Lot less expensive them progressive lens and, for me, work just as well. I can clearly read the newspaper again! Highly recommend.

Now I can clearly read my dive computer 🤓