My employer issues blue polo shirts with our logo on them to the installers and the service techs. I think the polo shirts are nice for the service guys but the installers wreck them pretty quick, get torn up in a ceiling, pvc glue stuck on them, and just general funk working in old buildings, it also doesn't help that they are cotton poly blend. They used to have normal cotton tshirts with the logo on them which were great, I still have two or three of them, but the owner felt that the polo shirts were a cleaner look. We also get sweat shirts and jackets once a year if you need new ones. The polo shirts we keep in the office so if you need another one all you have to do is ask.