Design: it blends perfectly with dark brown eyes (maybe too perfectly), and the pupil hole is designed in such a way that a clear-cut circle cannot be seen, adding to the natural feeling. There are not visible pixels, even from close distance. The only thing these lenses can be blamed of is not being grey enough, but on the other hand they make the design more natural. They are the lenses with my favorite design so far. It is so, so smooth and the gradient is greatly done.
Comfort: incredible. Actually, G&G/Dueba is the most comfortable brand in my opinion. No more comments since I just could fall asleep with these without noticing!
Enlarging effect: great, without being bug-like. They are very doll-like but without making me look soulless. Also, any make up compliments these lenses very well, no matter if it is simple, light, complex or dark.
Full review: http://glamourzombie.tumblr.com/post/17938660798/today-i-am-reviewing-the-ifax-y33-grey-circle