You then know that that pen will get at least a few uses. Logo pens also have the benefit of being seen by the person using it as well as the people around them. With promotional merchandise such as promotional golf shirts you will know that everyone around that person is seeing the logo on the shirt. Here you are essentially getting the same benefit as you would if you sponsored someone to wear your logo, except the view is that you are doing them a favour (it is in fact nothing short of genius business acumen). The only drawback here is that the wearer of the promotional shirts will not get to see the logo throughout the day (though it will be in photographs etc). With promotional pens they will literally be looking at the logo the entire time they are writing which will indelibly mark your business name in their brain as surely as the ink is marking the paper.