I bought these as I thought they'd be an okay substitute for the Yamaha or Protec Patches. Those ones are really thin, paper thin. These one's are nothing like that. First, they're made of PETG, which is another name for polymer, which isn't the worst thing, it can work. However, these are far too thick. They're about 1-1.5 mm thick, which is way to thick for these to be comfortable, and for it to not effect your sound. It should be so thin, that it just feels like a different texture on your flute. Instead, these literally push you slightly away from your flute in a bad way. I would definitely stray away from these.

I think these are better than described in the other review, but they may not be for everyone. Why? They adhere easily on and off the flute lip plate, and do reduce the slipping from a sweaty chin. However, when I first tried playing with it, my chin and lower lip could feel the slightly cushy, flexible plastic edges, and it was harder to sense where the near edge of the embouchure hole was. But as I played longer, I stopped feeling the edges, regained my tone, and noticed a good security from slipping. I’m a professional flutist and college teacher who has played for decades, so I have the skill level to know how to adapt to something like this. I can understand how someone else might not like these, compared to the thinner Yamaha lip plate stick-ons. One disadvantage to the thinner type is they have a synthetic fabric surface that does start to fray on the edges and can cause irritation, if you’re playing for hours. They wear out and if you take it off, it doesn’t stick back on as easily or well. These are easily removed, with no residue, and you can put the sticker back on the backing sheet it originally was on. It will still be applicable to the lip plate again. Nice.A tip for placement: place the sticker close to the central near edge of the embouchure hole. See my first photo for an example.These lip plate stick-ons are a *slightly* cushioned product, with a smooth plastic type of surface that melds to your chin and lip more. If you haven’t found that the thin adhesive cloth tape type works for you, I think these are worth a try. You get 40 of them all in a small, totable ziplock bag. The materials (though the lip plate product itself is sold by a Chinese company) are labeled as “double coated tissue tape” made by the American 3M Company, and that’s probably why the adhesive sticker is so convenient to put on and remove repeatedly, but is stable in use. 3M invented adhesives that can be put on and removed repeatedly, such as on Post-It Notes, which they also invented. They invented Scotch Tape and make a lot of medical supplies, among other things. They make top quality products for worldwide-wide markets, and are headquartered in Minnesota, USA.I think you could also stick one of these on the body of the flute where your right thumb should be placed. As a teacher, I’ve noticed students improve their right hand position more quickly when their thumb has something on the flute to guide it.I have a different perspective than the other reviewer about these lip plate stickers. I think they’re pretty good, but be advised you might need to go through an adjustment period with them. You might decide you hate them, or you might find them very helpful.Slippage on the chin can be a big problem in performance conditions, so if you’re interested in trying a new alternative, you might like these. They are safe to use and leave no residue on the flute.Recommend