5 but the size 9 are ok! I figured I just needed to wear it in, but after 3 months its still hurting me badly on the one side. Got this to hold my iPhone 7plus with caseology case. I added my initial for personalization. They dont slip or chafe and have sturdy thick soles. Very comfortable and doesnt ride up. Each hook is attached to the sturdy aluminum hanger with two machine screws! Else wise the sandal appears to be well made and the foam soles s perfect thickness I?m a 74 year old retired police officer who developed peripheral neuropathy in both feet shortly after retirement. The side covers do not stay attached very well and these bars do not fit the Yakima bike racks.