NWT Peepers Reading Glasses - Piper - Coffee 1.75 Sweet meets street in these bold, oversized frames that aren't afraid to make a statement. The Piper features delicate pyramid pins that add just the right touch of edge to your everyday look. Go ahead and rock that unapologetically you attitude, Piper's got your back. Peepers blue light lenses filter more than 40% of high-energy visible (HEV) blue light in the 400-450 nanometer range. Our proprietary, baked-in lens formula works together to prevent symptoms of digital eye strain, help reduce the cause of headaches, and alleviate tired eyes. Product Details: Peepers Blue Light Focus™ Lenses utilize proprietary baked-in technology that filters high-energy visible blue light Unique Lens Clearness all the comfort, all the style, with barely-there tints Dual Anti-Scratch Coating for long-lasting protection UV400 Protection blocks 99.9% of UVA/UVB rays Acrylic Aspheric Material Lens that’s ultra-thin and lightweight