Dickies Shirts are American classics in a better sense. In the US, to get very inexpensive, they are often found in garages and comparable environments. The popularity in the skater scene has probably originally to do with the good price / performance ratio. Pleasant cut, even for large sizes easily portable. For my taste, these shirts have a single mistake: The material shows after some time (where bags especially scrub ... eg) a "pilling" effect on particularly affected by abrasions. Overall, a very durable product quality and therefore quite recommendable.
