I was looking for a shoe that is light-weight and has support for walking, jogging, and general chasing the kids around.  I absolutely love this shoe.  I typically wear an 8 to 81/2.  I ordered an 8 1/2 to be safe. The fit very well.  They are snug along my foot and instep and have a large toe box. It took me a few days to get used to the large toe box, but am happy I didn't try for a smaller size. The way the material is made around the heel I have not had to worry about blisters. These are so COMFORTABLE! I bought the Crystal colored and love the color. I have nothing bad to say about the shoe. Although they are advertised to be worn bare foot and anti-smell. Well, I do wear them barefoot but they are beginning to smell. DO not care though still love them. Will never buy another sneaker!