Tevas normally fit me well. Teva Tirras are my go-to summer sandals.  I wanted a closed toe sandal so I ordered the Omnium.  Like other Tevas they were very comfortable & fit well EXCEPT for the heel area. The inside extra heel padding must have hit me in the wrong place as it was irritating on both feet. I have thin ankles so it seems like padding would be a plus instead of an irritant.  I tried wearing with socks for a few hours but that did not help so have to return.