Suprisingly good support for such a lightweight sandal. I have a high arch so I need shoes that are adjustable. The adjustment at the top of the sandal is fine but adjusting the second buckle to the last hole causes the leather strap underneath it to buckle (the strap underneath is too big for the adjustable strap on top of it when adjusted to the last hole). Even though I didn't like this buckling, I ended up keeping the sandals since it fit the best after trying on at least five pairs from other manufacturers.