Wiley-X Saber Advanced Sunglasses Information MEETS GL-PD 10-12 MCEP STANDARD, SUPERSEDING MIL-PRF-31013 BALLISTIC STANDARD PATENTED ADJUSTABLE SABER TEMPLES CAN BE CUSTOMIZED FOR LENGTH OR REPLACED WITH TACTICAL STRAP 3.0MM SELENITE POLYCARBONATE INTERCHANGEABLE LENSES FOR DISTORTION FREE CLARITY ULTRA FOAM BROW BAR PREVENTS DEBRIS AND SWEAT FROM ENTERING FIELD-OF-VIEW Fits Head Sizes: M - L - XLIncludes the following Smoke Grey Lens (306S) Microfiber Case (MB-312) Cleaning Cloth (A425) Saber Elastic Strap (306E) Wiley-X Prescription Information This frame uses a prescription adapter that snaps inside the frame behind the front lenses. This allows you to interchange the lenses for different lighting conditions with only one pair of prescription lenses. Recommended prescription range +6.00 to -8.00 total power (sphere plus cyliinder). Adapter Eyesize: 44/25, B: 31, ED 47 (see "More Help" page for eyesize infomation) ANSI rated frames so only polycarbonate lenses can be made into these frames. Most popular prescription options listed. Additional coatings can be added onprescription information page. Since insert sits behind goggle lenses, only clear lenses are recommended. Estimated processing time: 5 to 7 working days. Coatings will add a week.