The LensPen Hurricane Blower is one of the best cleaning accessories you can toss into your gear bag. It works very well for removing dust specs off lenses, sensors and SLR mirrors without touching the surfaces. It fits neatly in your hand and delivers a very strong blast of air as it cleans. When the cleaning cycle is completed, the ruggedly constructed rubber bulb refills rapidly and is ready for another blast. The unit is resistant to gross temperature swings making it a viable tool in all kinds of climates.