The Zeeion FlexoNozzle Sensor Cleaning Anti-Static Bulb Blower for Digital Cameras in blue from VisibleDust has a front and rear filter system inside the bulb that reduces particles by 20 microns. The bulb is made from an anti-static Silicon-RX material that reduces dust from reattaching. It creates a projectile-free, clean air system that removes dust and debris when the blower is squeezed. The flexible nozzle on the blower bends in any direction, so it prevents you from touching the camera's sensor with the nozzle and causing damage. The upright standalone design of the bulb allows you to place it on a flat surface, so it does not roll away from you.