YEESAM SWIM Diving Snorkeling Prescription Mask Nearsighted Myopia - Scuba Dive Snorkel Mask Nearsighted Prescription RX Optical Corrective Lenses Customized - Black Great and Prescription Mask! Available corrective lenses: -1.5, -2.0, -2.5, -3.0, -3.5, -4.0, -4.5, -5.0, -5.5, -6.0, -6.5, -7.0, -7.5, -8.0, -8.5, -9.0. IF YOU NEED DIFFERENT CORRECTIVE LENSES ON EACH SIDE RIGHT/OD, LEFT/OS . PLEASE SELECT "DIFFERENT PRESCRIPTION FOR EACH EYE" OPTION AND SEND US A MESSAGE WITH YOUR PRESCRIPTION AFTER PLACING ORDER. IF YOU SELECT ONLY ONE PRESCRIPTION OPTION (EX.-2.0), IT MEANS YOU ARE ORDERING SAME PRESCRIPTION FOR BOTH EYES Soft hypo-allergic silicone skirt and adjustable strap for a positive seal and long life Wide View. Tampered glass, PC frame for durability Dont Forget: U R Beautiful We strive for 100% customer satisfaction. Your positive feedback with 5-Star will be greatly appreciated! If any problem, please contact us before any harmful action to be taken. We will give you a satisfactory solution as promised