Just received these and they're so comfortable! You can see that it has a good enlarging effect and my eyes adapted to the prescription very quickly :)
I was expecting for jazz black that the ring would be thinner but I actually really like the thickness. It makes my eyes look intense and dolly.
For allure grey, there's some grey and light brown around the outer edge so it will add 2 colours to your original eye colour! I think it makes your eyes look more reptile-like? It's subtle but striking. I really love it!