How does the festool sanding pad work?

This pad is made for the LS 130 linear sander, link below. This sander features a back-and-forth sanding motion similar to how you would hand sand.http://www.festoolproducts.com/festool-567852-ls-130-linear-sander.htmlIt has many different shapes of pads that can help with sanding mouldings, spindles and other irregular shapes. Link below to additional LS 130 sanding pads.http://www.festoolproducts.com/accessories/sanders/pads.html?tn_festool_compatibility=LS+130