These are 1/2 a size big but I know that so I always orders a size 7 instead of my normal 7 1/2 (not that they offer that size in this shoe) but do size down not up.  The support is excellent...I have flat feet which result in a sore back when I walk a lot.  Taos shoes are the only ones that enable me to shop for hours with no back ache.  The arch support is comfortable for my flat feet.  It took me a long time to find this brand as most brands have too severe of an arch support for my poor flat rolled in feet.  I highly recommend this shoe to anyone that needs a good shoe for walking...they are worth the investment in price.