I ordered a size up, as other reviews described Sanitas as running small. They fit perfectly, but are still on the snug side over the top of my foot. I wear othotic inserts, and there's not enough room over the top of the foot for those to fit in. Hopefully the footbed will be comfortable enough without orthotics. I got these for working in a hospital setting and will be wearing them all day, all week; so I'll update this review after that schedule has begun.