The Narrow Golden Eagle Sport® glasses offer our highest lens curvature to wrap around your head and offer the most optical coverage out of any of our glasses. At 13cm wide, these are our smallest frames available. Bifocals feature a flat-top/lined, magnified/reader portion of the lens that is well-suited for seeing broad areas without having to move your head much, measuring 12mm from the bottom of the frame (just under halfway up the lens). Flying Eyes Features: Flexible temples made from Resilamide™ are 1mm thin for ultimate comfort and functionality Shatterproof, polycarbonate lenses that block 100% UVA/B light which keep your eyes safe Prescription compatible