Okay, so these clip-ons are giving me MAJOR mixed feelings. Let me break it down for y'all.
First off - the fit is PERFECT for my cat eye frames (55mm). Saved me from buying expensive prescription sunglasses, which is a huge win. The flip-up design is super convenient when running in and out of stores.
BUT... the polarization seems questionable? Like, when I did the crossed lens test (you know, where light should block completely), I could still see through. Not cool if they're advertising full polarization.
The case it comes with is nice though - leather feels premium. And the UV400 protection seems legit? At least my eyes don't feel strained after wearing them outside.
Warning though - some reviews say they break easily. Mine have held up for 2 weeks so far, but I'm being extra gentle with them just in case.
Overall? Good budget option if you get a non-defective pair, but maybe not the most durable or truly polarized option out there.