I really appreciate the next day delivery, which is always a positive thing. However, I did experience dryness and discomfort in my eyes when using the colourblend grey lenses. It was quite unpleasant and my eyes would occasionally become sore and red. I want to mention that I don't usually have any issues with my eyes. On the other hand, I also ordered desio contact lenses at the same time as the colourblend grey and they have been excellent. Unfortunately, I had to dispose of the colourblend grey lenses.