37BBF Bifocal High Density Driving Lens Sunglasses

1.9mm Polycarbonate Lnes is sturdy Shatterproof and Scratch Resistant Virtually Invisable Bifocal beecause it is injection molded. Bi-focal Positioning is good for seeing above and below and straight ahead. Comfortable lightweight frame. Stays in place - Rubber nose pieces and rubber accent on inside of arms to keep sunglasses in place and softly comfortable. Blocks Sun - wrap around frame blocks the sun rays from coming in all around the head.  100% UVA + UVB Polarized protection.