I've worn the sandals for several 8-10 hour days now and they are very comfortable.  The soles are sturdy and provide good traction, and the footbed is firm yet conforming and comfortable.  The straps feel strong as does the velcro with which they fasten.  I ordered the next whole size up (I wear a half size) from what I wear in other shoes, and they fit perfectly.  Good product.  Would buy again.