Three Reliable Witnesses

There were three reliable eye witnesses to the robbery. I was the first detective on the scene; did not even have time to put on my overcoat. One said the perpetrator was young, blonde, five nine, thin. Another said he was dark-skinned, thirty-five-ish, stocky, with green eyes. A third said he was not sure if the perp was a woman or a man. I gave this guy a business card to my other business. When I am not solving crime from my easy chair, I sell eyeglasses.