The Chelan is better than any other shooting glass because of a-Eye™ technology, it features a tough nylon matte black infrangible frame and NVR/fog™ venting between the frame and lens. Our assorted kit has interchangeable NVR/ fog™ lenses in amber, clear & smoked which allows you to personalize the shooting glasses to view your front sight & targets in various light conditions. This Kit is packaged Locking Hard Case with Rubber Water and Dust Proof Seal. Two Padlock Lockable Hasps, a Secret Compartment for tracking Device Compartment for Molded Ear Plugs, a Label for Name & Phone Number, Innovative Pressure Equalization Valve for Quick Adjustment to Different Air Pressures. Stay focused, on-target and get your kit today!