12 Pack Metal Hollow Frame Blue Light Blocking Reading Glasses UV2301 Multifocal Glasses Flip-Up Design – Effortlessly flip

Flip-Up Design – Effortlessly flip the lenses up or down as needed

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

Q3: What strength should I choose

Lens height about 111/16 inches (43mm)

Lens height about 1 inches(26mm)

12 Pack Metal Hollow Frame Blue Light Blocking Reading Glasses UV2301 Multifocal Glasses Flip-Up Design – Effortlessly flipAcrylic 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)