YELLOW & GREEN DUAL LENS frame 40 BLACK Fit-Over MEDIUM SKU 247789027357

DUAL LENS Dim Light Melatonin Onset Eyewear with YELLOW MAIN LENS and Migraine Photophobia Pain Relief FLIP GREEN lens frame 40 BLACK Fit-Over MEDIUM SKU 247789027357 Frame #40 fit over style can be worn alone or over small prescription glasses.  The yellow lens is for persons who sleep at night. To be worn a few hours prior to sleep, preferably with the green lens flipped UP. To be worn with green lens flipped down anytime, to relieve photophobia and migraine pain.  The yellow lens alone or with the green lens also flipped down allows melatonin onset to precede attempted sleep time, making sleep more achievable and cellular repair time longer. NOTE: the green lens is very dark. Designated as medium. Dimensions: 130mm width, 48mm height, adjustable temples length 140mm plus.  Weighs 52 grams. 60 DAY NO QUESTIONS FULL REFUND POLICY FREE SHIPPING IN THE USA AND CANADA  UV BLOCKING MADE IN USA  HOW TO USE MELATONIN ONSET EYEWEAR FOR TYPICAL NIGHT TIME SLEEP NIGHT SHIFT WORKERS - HOW TO US