Part of all-time tennis great Roger Federer's collaboration with Oliver Peoples, the R-4 rightly combines a sport-inspired aesthetic with lightweight construction. The shield-style design features a top bar that wraps around the color-enhancing performance lens with subtle Oliver Peoples and Roger Federer branding. Rounded, adjustable temple grips help with stability and comfort, as does the full rubber bridge. Octagonal temple tips, inspired by the shape of Federer's racquet, complete the look.