Designed for SLR cameras lenses. The case protects the lens from the outside elements. The outside of the bag is made from a strong water resistant fabric. This can be attached by either a belt loop or with the included shoulder strap. Non-standard lenses change the dimensions of your camera. This is not, nor do we claim it to be an official product of the brand that its designed to fit. All Tuff-Luv cases are styled to our own designs and specifications.