Clip on Flip up Sunglasses with UV400 Polycarbonate Polarized Grey Lenses Medium Size glass lens polarized Squeeze to open clip to fit nearly all types of glasses Super Lightweight (only 6-7g) , never damage the frame or the lenses of the spectacles Conveniently flip up or down at any angles with only one hand Feature UV400 Lens Technology, absorbing 100% of harmful UVA and UVB rays 56mm Lenth for one Len x 34mm Height (2.2"x 1.3"), Whole Lenth:128mm (5")