Built for adventure. The Backbone-S takes a frame built for those battling the elements and turns into the ultimate line of defense for any condition.OPTICS: 8 base OHM Polycarbonate lens. 100% UV protection. Up to 98% Blue Light protection. Addition of anti-reflection, hydrophobic and oleophobic performance lens coatings.The OHM+ combines the world class OHM lens with the addition of HYDROPHOBIC COATING: A double-sided lens treatment that repels water, sweat and condensation, OLEOPHOBIC COATING: A double-sided lens treatment that repels oils and dust. Smudges and smears wipe off easily, ANTI-REFLECTIVE COATING: Reduces reflections off the back surface of the lens which increases contrast.s Each of the lens colors has unique benefits for optimal use. From being on the water, running the trails, enjoying the grassy fairways or even on those darker cloudy days – these lenses will clarit yto the next level.FeaturesFRAME: 8 base mold injected Grilamid frame in feather weight construction with performance grip nose bridge and temple tips. Innovative double action hinge systemMEASUREMENT: 51h - 144w - 166lWEIGHT: 38gramsCalifornia Design. Hand Crafted In ItalySlip Ons