Please state your power in the message box when you check out at the payment page Product Details: - 6 pcs per box - Diameter : 14.2mm - Base Curve : 8.6mm - Water Content: 59% - Monthly Disposable - Comfort all the time PRESCRIPTION AVAILABLE : ? -0.50 to -6.00 (0.25 increment) ? -6.00 to -9.00 (0.50 increment)