Wash it by hand? That too much for me. I would recommend to anyone who needs a comfy sandal with support. Im a small person (51") and dont have a very big head or large ears. Tengo dos bocinas de este tipo y por medio de la aplicación de Bose se pueden "ligar" con lo que se obtiene un sonido Stereo o un "Party Mode" donde las dos bocinas suenan al parejo. Im settling in at 4 stars instead of 5 because there are simply some features that I cant or wont use. Straight out of the box you can feel the quality. It hurts to have to get rid of it even when its full of hair. My grandson loves them, they fit perfectly he wears a size 2. My husband and daughter has the larger type bluetooth speakers and I thought this will be great to take to the park and outing whether than the larger bluetooth speakers. I am going to echo what others have said in that this sandal fits really weird.