@benthouard using our All weather Shields on location in the Arctic. Ben is is using the AWS Large set which is covering his 800mm f/5.6 and 1Dx from canon. The smart modular design means you can keep your gear covered no matter what the lens without having to carry full sets of covers. AWS Primary for any camera small to medium zoom lenses and prime lenses and then add AWS Extension kits to suit anything larger. Explore the AWS range today on our website or at your local camera store.