I lost track of the time wearing these and ended up wearing them for over 9 hours and they were still pretty comfortable. My eyes did get a little red and dry but I have pretty dry eyes anyway so it could just be attributable to that. These lenses lighten up my very dark grey brown eyes nicely. It tones down the coolness of my natural irises and adds a bit of warmth. Enlargement is slight and they look very natural on my eyes. I'm not used to my eyes being lighter so I think my eyes look buggy but after a couple days of wearing these lens I find that is not the case. These are a pretty good, comfortable pair of lenses for beginners.