These are the best water shoes. I live on the sun coast and the beaches are loaded with shells and sharp pieces of shells. They are murder on my feet whether in or out of the water. Once zipped these water shoes fit  snugly and keep all the sharp stuff out of my shoes and away from my feet. They are comfortable and dry quickly. I usually hose these off, but on occasion I have tossed them in the washer on a cold gentle cycle minus the removable insole and then air dry them on the patio. My only advice is size up at least a half size to allow for wiggle room. Speedo is normally sized a little short.