The medium black MX5375 M.A.S. Lens Case from Tamrac is a 600 denier Ripstop PolyTek nylon lens case with closed-cell foam padding and a weather flap. This case is designed to fit most lenses up to 4.5" (11.5cm) long with a filter size of 58mm. It is part of the M.A.S. (Modular Accessory System) that allows photographers to customize and personalize their backpacks, shoulder bags and cases by using accessories that quickly attach to the M.A.S attachment slots. This case will also attach to any belt or to the Tamrac Modular Accessory Belt. The case has a carrying handle and a belt loop.