Cagalli B220 Rimless Prescription Eyeglasses Frame Lightweight Rx Glasses Composite frame plastic lens non-polarized Lens width: 52 millimeters Lens height: 28 millimeters Bridge: 18 millimeters Arm: 140 millimeters Durable prescription-ready eyeglass frame with replaceable demo lenses. Anti-allergic coloring, extremely lightweight, flexible and durable high-quality material eyeglasses Satisfaction guaranteed. If you're unsatisfied with your purchase for any reason, you can return it for full refund. Your purchase includes a hard case to keep your prescription eyeglasses frames damage and scratch-free. Shipped in same business day for orders before 2 pm EST