Size Guide: Medium size fit Finley's eco-friendly, handmade bio-acetate and Revo's signature NASA-based polarized lens technology make the future look brighter. The rectangle shape is universally flattering and the lightweight frames are comfortable for all-day wear. DETAILS Revo high-contrast polarized Serilium+ lenses Lightweight, impact-resistant, glare-reducing nylon Handmade bio-acetate frame Completely organic, plant-based, sustainable, and 100% biodegradable Measurements 57-16-145 Lens Height 38 mm 6-base lens technology A flatter profile, temple to temple Spring hinge Flexible temple for a comfortable, secure fit Revo Light Management System™ Filters harmful UV, HEV, and Blue Light Digital Device-friendly Reduces glare and enhances clarity of digital screens SIMILAR STYLES Similar style with crystal glass lens: Finley GSimilar style in metal: Decoy