Harley-Davidson Men's Performance Control Day-Night Eyewear Black HDSZ911BLK-D2N plastic frame plastic lens non-polarized Lens width: 63 millimeters Lens height: 4 millimeters Bridge: 17 Arm: 12 millimeters Angular oval sunglasses with foam backing Day-Night lenses that change when exposed to sunlight ForceFlex Technology providing an unbreakable, super flexible frame Anti-Foam lens 100% UV A&B Protection