The sizes in Havaianas require a little attention! Although I bought the Brazilian 39-40 (which corresponds to European 41-42 according to the company), when I put them next to my old 39-40 Havaianas, they were slightly smaller. My size is normally 40 in flip-flops. The gray color is very nice, but a little darker than it appears in the photo. Havaianas are guaranteed, they have a very good grip. I had bought Ipanemas at the beginning of the summer and I didn't have a stable footing. My old Havaianas had lasted for 3.5 years.