Improve and protect your optics with Meopta MeoCap. By blocking peripheral light, these caps stop flaring and reflection. They also reduce eyestrain and improve contrasts, helping you locate your trophy. Propriety fit system uses radially aligned inserts (included) that grip the eyecup and can be changed to fit a wide variety of eyecup sizes. Tough, ABS construction is durable and weatherproof for long-lasting use. Caps close securely for complete lens protection. Hinge system contains no metal parts or springs to lose or break. Made in USA.