Be the champion you were made to be with certified protection. The MS1000 meets or exceeds ASTM F803 impact resistance for several sports. Sizes: Narrow [A:51 B:32.8 ED:54 DBL:17 TL:125] Average [A:53 B:34.7 ED:58 DBL:17 Prescription Options: Non-prescription: Offers style and protection with no vision correction Single Vision: Corrects one field of vision (near, intermediate, or distance) Progressive: Corrects near, intermediate, and distance fields of vision in one lens so you don't have to switch between multiple pairs - only recommended if you are accustomed to wearing progressive lenses while participating in your preferred sports/activities Lens Packages: Classic: Clear lenses that block 100% of UV rays Light-responsive: Lenses that transition from clear to darker tint outdoors (choose from grey or brown)- recommended for both indoor and outdoor sports and activities Features: Five Authentic Designs inspired by a fusion of sports performance and street art. Unisex Shape. Patented (#6,890,073) eye rim assembly and 6-base lens curve design allows for a wide range of prescription lens powers. Sculpted temple design with color coordinated inside padding. Temples and bridge have soft, color coordinated padding for comfort and fit. Packaging: Comes with semi-rigid case, cleaning cloth and adjustable strap  Standards: Meets or exceeds ASTM F803 impact resistance for several sports.