SPECIALIZED Helix adaptalite glasses biking cycling sunglasses

This is a pair of very lightly used SPECIALIZED Helix Adaptalite Glasses Biking Cycling Sunglasses in excellent condition with original case. The Helix provides the incredible performance of the Adaptalite Photocromic road lens in a single lens shield silhouette that provides a panoramic field of view. - Adaptalite lenses automatically adapt to varying UV levels changing from light to dark tint in less than 15 seconds. - Aerodynamically engineered frames and lenses have been designed for optimized air flow to prevent fogging while still ensuring full wind protection. - Full- time 100 percent UVA and UVB protection while still providing exceptional optical clarity. - Lenses made from a material called NXT which is a revolutionary unbreakable optical polymer that is 10-20 percent lighter than other sports lenses.