PVC & Polycarbonate

PVC & Polycarbonate

Nose pads made from plastic material called "PVC" (polyvinyl-choride) or Polycarbonate.  These are alternatives to silicone in nos epads, PVC nose pads are slightly firmed than silicone with the advantage the material is nonporous, so PVC nose pads last longer and tend not to discolor.  Polycarbonate nose pads are firm to hard thin and clear.