I have a pair of dragon goggles and was looking into getting some lens replacements but I have no idea whether there DX or DXS. I know the DXS are smaller but my goggles seem to fit finely but i really can't tell. Does anyone know what to look for so I can tell what type they are. I threw away the package they came in so im STUMPED. It wil be greatly appreciated if someone can help me out.