The Op/Tech USA Hood Hat is a neoprene cover that slides over the lens hood and protects the lens from dust, moisture and impact.
OpTech is always on the cutting edge of innovations with neoprene, and their Hood Hats are certainly no exception. Now the photographer doesn't need to reverse or remove the hood every time they wish to protect the lens from dust. Instead, they can simply slip the hood hat onto the front of the hood while in place and provide just as much protection for the critical front lens elements as would be provided by a traditional lens cap. The neoprene material will adjust to fit both round and elliptical "petal"-type hoods.