I saw an ad for these in a magazine, fell in love, and was happy to find them on Amazon. I might not have chosen green, but it was on sale and the other colors were not. My feet are somewhat narrow and I usually wear an 8, though sometimes an 8 1/2. Birkenstock 39 N fits me perfectly, so I went with 39 (8) in these. When I first put them on I thought they were too short; my toes hit the end of the shoe.. but after wearing them around the house I realized that was only because of the shoe's design, which tends to position your foot forward a bit. They are actually the perfect size. I am VERY fussy about comfort and these are super comfortable, no breaking in is needed. I will be wearing these this fall here in southern CA. I think they would be too warm for my liking in summer. The green is a nice neutral green that goes with a lot of other colors and I know I'll get a lot of wear out of these very cute and comfy shoes!