CUIs are fine honey, don’t worry. Someone on here as posted about mr t saying he wouldn’t use them, which is unfair and has scared ou. He told me he s 100% happy with them, ont worry. They have. Lifetime warranty. They are just allergan’s European version and hence don’t need FDA approval, they are ce medical kite marked which is the same. You just need books/mags nd overnight clothes just in case. Good luck, you will be fine x