This listing is for authentic Spy Helm Ken Block 43 Light Grey Purple Frame Polarized Purple Mirror Lens Unisex Sports Sunglasses 57-18-140. Sunglasses are in good pre-owned condition, with light wear (see photos). Size: 57-18-140. Please see pictures to make your complete condition assessment. The Spy brand has an obsession for progression. The Spy DNA melds their action-sports heritage and youth energy with an obsession for fashion-forward styling. They are at the intersection of retro-futuristic design and optical innovation, expressing their identity through the iconic minds, bodies and visions of the world’s greatest athletes and artists. All Spy eyewear is designed in California, and features only the highest quality frames and lenses available, fabricated by hand in the Italian tradition of high-quality optics. Kenneth Paul Block was an American professional rally driver with the Hoonigan Racing Division, formerly known as the Monster World Rally Team. Block was also one of the co-founders of DC Shoes. He also competed in many action sports events, including skateboarding, snowboarding, and motocross.