BJ Penn Model made from TR 90 Polyamide: TR-90 Polyamide is a lightweight nylon characterized by an extremely high alternative bending strength, remarkable toughness, exceptional resistance to chemicals, and a remarkably high resistance to UV damage and breakdown. Translation-almost indestructible! Ear and nosepieces are made from a hydrophilic rubber designed to increase their grip when exposed to water or perspiration and increase comfort.

Polycarbonate Lens: lens are used for its high impact resistance due to elasticity, and optical clarity characteristics. The lenses flex instead of shattering upon impact. Polycarbonate lens offer 100 percent UVA/UVB protection from the sun.