The On-Stage FS7850B is a foot stool for classical guitar players or studio electric players who often like to put their left foot (or right foot, if they're left-handed) upon a raised surface to facilitate proper hand positioning in order to execute the techniques necessary for arpeggios, natural vibrato, slurs, and more. This particular foot stool gives you five fixed-height positions.
A non-slip rubber pad keeps your shod or unshod foot in place, while rubber end caps on the bottom of the foot stool provide additional stability. It folds flat when not in use, making it easy to transport the foot stool in your case or bag.