12 Pack Metal Hollow Frame Blue Light Blocking Reading Glasses UV2301 Multifocal Glasses these glasses protect your eyes

these glasses protect your eyes and help you fall asleep faster and wake up refreshed

Bridge (DBL) about 1 1/16 inch (17mm)

Enhanced Durability: These polarized sunglasses offer reliable performance

Q3: What strength should I choose

12 Pack Metal Hollow Frame Blue Light Blocking Reading Glasses UV2301 Multifocal Glasses these glasses protect your eyesAcrylic lens, metal frame with spring hinges Block 40% blue light, almost no color distortion Frame width about 5 1 4 inches (133mm) Lens width about 2 1 16 inches (52mm) Lens height about 1 11 16 inches (43mm) Bridge(DBL) about 1 2 inches (13mm) Temple length about 5 3 8 inches (137mm)