Billie is a hexagonal frame in thin metal, its ribbed bridge and hinge detailing letting the six-sided shape take center stage, the geometric form eyewear is currently treating as the standout of the season. Product Details Frame: Metal Lenses: CR-39 UV-400 protection blocks 100% of harmful UVA and UVB rays Hardware: Adjustable nose pads, ribbed hinge detail, acetate temple tips Size & Fitting Size: 49-21-145 Medium Temple length: 145mm Face Coverage: Moderate Bridge: Adjustable Fit