What is the difference between the Silicone, PVC, Acetate, and Bohemian Crystal nose pads?

Silicone nose pads are the most popular material because they are flexible, soft, and comfortable.

PVC nose pads are firmer than silicone nose pads. They are popular for those patients who may be allergic / sensitive to silicone.

Acetate nose pads are very firm, even more so than PVC. They are used for patients who may be allergic / sensitive to silicone and PVC.

Bohemian Crystal nose pads are a clear glass material with a polycarbonate post. They are used for extra-sensitive patients who may be allergic / sensitive to every other type of nose pad material.