Original style, environmentally-friendly construction, and innovative optics... the Proof Eyewear Polarized Wilder Sunglasses represent all things modern. Proof made the frame with cotton-based acetate, sustainably sourced wood, and stainless steel for a combination of green-friendly ethics and long-lasting durability. The lenses are polarized to eliminate glaring as well as UVA and UVB rays. Proposition 65 Warning for California Consumers: This product contains chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm.