Its not very adjustable, and becomes painful to wear after only a few minutes. Nope. These are cute and they?re stackable or you can use as a single layer. We thought it was great right away, and then hours later even better. Position the clamp to press the bar stock bit onto the glue in the space between the screw holes. Will only fit 1. They are classy and such a pretty color. The product comes in a good package which prevents it from being damaged during transit. My mind, and feet, are forever changed. Me quedó muy bien, incluso para correr y jugar tenis.