This item is designed for removing dust and tiny particles from something that normal cleaning ways can't work, like wiping or washing. For example, when you clean your camera lens, wiping the lens and the tiny particles may scratch the surface of lens, so it's better to clean lens with our product, which would not bring harm to your lens. This item can also be used to cleaning objects that can't touch water or has narrow gaps, like keyboard. Features: 1. Made of high quality rubber, sturdy and durable. 2. One-way air valve, quick inflation after every squeeze. 3. Proudly made metal nozzle and highly elastic rubber, offers strong blast of air for cleaning. 4. Portable and lightweight, easy for carrying and storage. 5. Suitable for cleaning lens, computer, glasses, keyboard, etc. Specification: Materials: Rubber Size Options: S, L Size: Approx. S-118 * 55 mm / 4.64 * 2.16 inch, L- 130 * 62 mm / 5.12 * 2.44 inch Weight: Approx. 55-78g Package Included: 1 * Dust Blower