Oakley HSTN Sunglasses pair a minimalist, rimless profile with PRIZM Tungsten polarized lenses for improved contrast and reliable everyday sun protection. Key attributes: Green | Olive ink | Prizm tungsten | O-Matter | PRIZM lens technology | Polarized lenses | Enhanced contrast | Prescription compatible (Rx-able) | Trigger-style temple construction | Minimalist rimless frame | Round lens shape | Trigger-style temples | Dimensions & fit: Lens width: 52 mm | Bridge: 21 mm | Temple length: 142 mm | Regular (universal) fit | Composition & care: Frame: O-Matter | Lenses: PRIZM Tungsten (polarized) | Rinse lenses with lukewarm water and mild soap; dry with a microfiber cloth. Store in the protective case when not in use.