Once you have - clipped this to your vest, car or camera bag you will use it constantly and always have clean lens, this is a small perfect gift for your self or friends. You clip it onto anything- you release the small toggle at the top of the neoprene cover hood and then pull out the lens cloth , use it , stuff it back up into the hood after use ,push down the toggle and its stored nicely away, very light and so easy to use- never have dirty lenses again. Trust me- Stu- i have got one in my car hanging, one on my camera case and one on my fishing vest and use them all the time. This one comes in a nice camo colour- so it does not get dirty quick!