It's great in relieving visual discomfort and fatigue when working or gaming on computer for a long time

block more than 99% within 400nm-410nm

the actual pattern and color on eyeglasses may vary slightly from the one pictured

Light weight and super elastic material

Bridge (DBL) about 1/2 inches(13mm)

Blue Light Glasses Eyeglasses Vintage Style BC1903-BB60 feed-color-White/Black/Red It's great in relieving visualAcrylic lens, acetate frame with spring hinges Block 60% blue light, 20% color distortion Frame width about 5 9 16 inches (141mm) Lens width about 2 inches (51mm) Lens height about 1 9 16 inches (39mm) Bridge(DBL) about 1 2 inches (13mm) Temple length about 5 1 2 inches (140mm)