The VPS570A is a parts kit that allows you to assemble your own SWIPE optical goggles using different nosepieces and strap adjusters. It comes with 3 different sized nosepieces, side clips,  and a silicone strap. The VPS570A is a kit designed for the VC580AS SWIPE corrective lenses (2 lenses required). The kit can be easily adjusted with interchangeable side clips that are quick and easily released.