I got this from a work colleague as a Chris Kringle present . its a wrist rest that glides along the desk beside your mouse . its weird . it moves with the mouse as it slides across the desk as its got little runners under it. If you have ever had cause to use a mouse pad with a wrist rest like I had my wrist gets sore and I moan about it its a really handy alternative. For once I got a pay back for not picking the wrapped gift that looked like a bottle of vino or the choccies!!