OveRxCast Polarized Sunglasses &ndash;Designed to Fit Over Prescription- Medium Frame Fits over prescription eyewear 100% polarized, uva and uvb protection Patented frame design provides top, bottom and side protection Lenses are prescription ready (Rx-able) Fits over prescription eyewear 100% polarized, uva and uvb protection Patented frame design offers protection from all angles Extremely popular with fisherman 1 year warranty worn over prescription glasses, MEDIUM SIZE blocks 100% of harmful UV rays, eliminates glare fits over frames up to: 5 1/4" wide X 1 1/2" high, 133 x 39 mm composite poly frame