Prior to using these, my favourite acne patches were the Cosrx AC Collection Acne Patch because of the size and shape of them. I got these hoping they'd be the same just a heap of them. I didn't check the sizes or anything though and thought they were quite large, like the picture shows on the front. Unfortunately they are not, but they are still fantastic.
They come in 2 sizes, which are the same as the small (9x13mm) and medium (11x16mm) sizes of the AC Collection patches. You get 5 sheets of 18, with 9 small and 9 medium on each sheet. I would've loved for these to come in the large (15x23) size that the AC pack has, instead of the small personally as I find the larger ones to be much more efficient and cover my spots better.
I love that these have Salicylic Acid and Tea Tree Leaf Oil in them. In conclusion, I highly recommend these as they are the oval shape is better than the circle, in my experience, and this pack size means I less packaging waste, besides having plenty.