I ordered these go step ballet flats in an 8 1/2.  They're a little tight out of the box, but I know Skechers well enough to know they're stretch out.  I was hoping these would work for my trip to Europe this summer when I'll be walking all day long.  Unfortunately, there is absolutely no arch support. I decided to keep them to replace my old Skechers I keep by the door to walk the dog, which they'll work for.  Please Skechers, add arch supports to your shoes.