Equal dashes swagger and adventure help shape the Helm into a modern-retro classic with aggressive lines and an even more aggressive following. The Helm is available with the Happy Lens(TM) and Trident(TM) polarization, features a nearly indestructible Grilamid(R) construction, and delivers 100% UV protection. For more classic looks, check out the Helm 2. Happy Lens(TM) enhances color and contrast, increases clarity, and improves mood and alertness Constructed from Grilamid(R), a lightweight frame material ideal for everyday wear due to its strength and flexibility 6-base polycarbonate ARC(R) lenses Keyhole bridge and integrated hinges 100% UV protection reduces eye fatigue and long-term sun damage Frame measures 57-18-140