Original X-KD's 20% Larger Polarized Lenses Black Frame Biker Sunglasses polarized X-KD's Are 20% Larger Than The Original KD's! Acetate Frame With Wire Reinforced Temples Ultra-Tough Polycarbonate Lenses Total Frame Height 1-5/8", Total Frame Width 5-3/4" Meets ANSI Z80.3 Standards