Sam is a round in a full metal frame, its rims set with acetate inlays. The layering of fine metal and acetate gives a light frame added depth. Product Details Frame: Full metal frame with acetate inlay Lenses: CR-39 UV-400 protection blocks 100% of harmful UVA and UVB rays Hardware: Adjustable nose pads, temple tips Size & Fitting Size: 47-22 Medium Temple length: 145mm Face Coverage: Standard. A balanced lens front for those who prefer to cover an average portion of the face. Bridge: Adjustable Fit. Nose pads can be tailored for a precise, comfortable fit on any nose shape.