There is more than meets the eye with Tamrac's Professional Lens Cases. Constructed of waterproofed PowerGrid Cordura with a smooth nylon lining, there is a double layer of foam to surround the lens. The outer layer is dense, closed-cell foam and the inner layer is a soft, open-cell foam.Together, they combine to cradle and protect expensive lenses. A hard plastic bottom beneath the foam protects the lens from shock. The tops have full coverage rain flaps, double slider coil zippers and our Easy Squeeze quick-release buckles for fast access and protection. A handle on top, belt loops and "D" rings for accessory shoulder straps provide carrying options and convenience.