The blade is made from 7Cr17MoV stainless steel

all you have to do is turn the handle

It's engineered for long hours of waiting for the perfect shot

The best resolution and contrast in all lighting conditions

It was made to take with you on a hunting trip

Costa Del Mar Saltbreak Blackout Blue Mirror 580G Brand_13 Fishing The blade is made fromProduct Description There's nothing fancy about the hardworking Costa Saltbreak sunglasses. Built with tough, durable nylon, integral hinges and equipped with polarized lenses, these Costa men's fishing sunglasses come in epic colors and are versatile enough for any adventure. Costa 580 lenses were designed by in house light spectrum experts to enhance colors because standard sunglass lenses fell short. The lens' multipatented technology manages light