We decided to ask Wendy (in our office) to tot up the reasons why she needs her lens cloth, and she came up with quite a few. She claims three pairs of reading glasses; bifocals, one by the bed and a funky pair in her purse, the sunglasses in the car and the ones in the handbag. Add to that the iPhone and laptop which makes seven surfaces that are touched by fingers and smudged with make-up, etc.
We would say Wendy is an average user.
So you can see why we rate the lens cloth as on of our best promotional products.