Made to fit most popular wide angle zoom lenses like the 17-35mm f/2.8. | Flaps lock lens in tight with large patches of Velcro. No zippers are used. | Pouch is lined with foam to protect lens from impact. | Pouch flap contains an extra pocket for storing memory cards or film. | Made from ultra durable 420 Denier Crinkle Nylon that is both water and stain resistant. Nylon is easily spot cleaned with cloth and warm water.