The frames are injection-molded exclusively from TR-90, a highly advanced nylon-based material that is uniquely formulated for strength, flexibility and memory retention. Lightweight and extremely durable, TR-90 withstands harsh elements without breaking down or losing its finish. The frames also has rubber nose pads & temple tips for additional comfort. The lenses are Polycarbonate plastic which is an extremely strong plastic that is often used in aircraft and motorcycle wind shields. It is also lightweight and extremely impact-resistant. Polarized lenses fight glare by minimizing the passage of undesirable light through to the eye. It works as a Venetian blind made of iodine crystals in parallel rows that permit only light directly reflected from a surface to pass through, blocking all the array of light waves reflecting from reflective surfaces (such as water, snow, & the road). This lens provides sharper vision, more vivid color reproduction, & improved depth perception. Virtually 100% of UVA & UVB rays a Style: Sporty Type: Watersport Sunglasses Gender: Unisex Age: Adult Frame Color: Black Lens Color: Smoke Sun Protection: 100% UVA & UVB Frame Material: Plastic