Description from Woodbrass :
THE REVOLUTIONARY HARP HOLDER Free-handed harmonica playing has never been this easy ? or this comfortable. The FlexRack is the first harp holder of its type that is this flexible. You can easily adjust position, angle, and height without any tools, and exchange your instrument by simply sliding it in from the front. Thanks to the adjustable spring force and the gummed fasteners, your harmonica isn?t scratched or bent in any way. And thanks to the ergonomically shaped neck brace, it is incredibly comfortable as well.