I was skeptical because some reviewers said that these were knock-offs. Not considered for noise cancellation However they?re not rated for that. Disappointed about that. Couldnt wait to get home and take them off! Been rocking these for a few months all day/everyday and they?ve held up great as you can see ?? So if you are going to go for it, make sure you size up and also that you have VERY slender feet that are flat to fit these. It took me twice as long to attach them to the cabinets, I installed them backwards but were easy to slide a knife between the cabinet and tape and switched them around. Distance runner here. Even used to make the bags smaller with a gizmo. The sandal has a wide foot bed but the straps have not been extended to allow the shoe to fit properly.