THE BEARKAT BK1 MAGNIFIER'S WELL THOUGHT-OUT CONSTRUCTION COMBINES THE BEST IN SAFETY COMFORT AND AFFORDABILITY YOUR VISION IS UNOBSTRUCTED BY THE FRAMELESS ONE-PIECE WRAPAROUND LENS WHICH BY ITS SECURE FIT ALLOWS YOU MAXIMUM SAFETY. COMFORT IS ENHANCED BY THE FLEXIBLE TEMPLES AND THE NON-SLIP TEMPLE SLEEVES ARE NOTCHED ON THE END TO ACCEPT A CLIP-ON BREAKAWAY CORD THESE MAGNIFIERS ARE AVAILABLE IN A VARIETY OF DIOPTER STRENGTHS SO THERE IS AN OPTION THAT IS JUST RIGHT FOR YOU MEETS OR EXCEEDS ANSI Z87+ AND CSA Z94.3. WARNING: This product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov - Bisphenol A (BPA)