Oakley HSTN RX Optical Frame combines a modern round silhouette with Oakley design details. Built for prescription lenses, it suits everyday wear with a distinctive performance-inspired temple design. Key attributes: Gray | Transparent | Prescription-ready | Includes demo lenses | Round frame shape | Full rim | Trigger stem temples | Dimensions & fit: Lens width: 50 mm | Bridge width: 21 mm | Temple length: 140 mm | Lens height: 46.2 mm | Medium fit