The Gunner from Bobster is as close as you"re going to get to a custom pair of sunglasses. They go way beyond the call of duty. The Grilamid TR90 frame is lightweight and durable, while the convertible design will allow you to interchange the sturdy ear pieces to an adjustable goggle strap. There is also a removable inner closed cell to keep out dust and debris, plus provide additional protection. The photochromic lenses are also interchangeable--there are clear lenses included for lower light conditions and night time wearing. Includes a protective case for storage.