Frame Features- Grilamid TR-90 Open Frame Design. Hydrophilic Rubber Adjustable Temples. Limited Lifetime Warranty. LensFeatures- Enhanced Visual System (EVS) Polycarbonate Decentered Lens for Optical Clarity. Glare Guard. Glare Reducer to Decrease Eye Fatigue. 100% UVA & UVB Protection. Three Lenses Included for Various Light Conditions Clear, Smoke, AC Red