Clip on Flip up Sunglasses with UV400 Polycarbonate Polarized Lenses 60mm/56mm in Grey/Yellow/Brown/Green (Yellow, 60mm) 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 Large Size: 60mm Lenth for one Len x 36mm Height (2.4"x 1.4"), Whole Lenth:131mm (5.2") ; Medium Size: 56mm Lenth for one Len x 34mm Height (2.2"x 1.3"), Whole Lenth:128mm (5")