SHINU Semi-Rimless Glasses Frame Clubmaster Blue Light Blocking Eyglasses-SH018 TR90 frame CR39 lens non-polarized Lens width: 54 millimeters Bridge: 18 millimeters Arm: 139 millimeters You Could Choose demo Lens or Anti Blue Light Clear Lens. Filter Effect: Polarized Block Most of the Blue Light 114% UV.(anti blue light lenses) Minimizes Digital Eye Strain and Fatigue casued by Monitors and Screens.(anti blue light lenses) Great for Browsing, Playing Games, Watching TV or Working under Fluorescent Lighting.(anti blue light lenses) RX-compatible,So You Can Fit Our Frame at Any Optometrist with Your Personal Prescription.(clear lens) You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!