These are, without a doubt, one of the finest pair of steampunk goggles we have ever offered. This elaborate eyewear is made of soft stitched, 100% black leather. They are adorned with rich brass filigree and gears. However, the most unique feature is the manual operating brass diopter over the right eye, which can be opened and closed. The left eye comes with three interchangeable colored lenses: green, amber & smoke. The adjustable rear strap fits up to a 7-1/2 men’s hat size.