They basically do your graphic design for free or a tiny fraction of the cost. They are so fast and understand what you want so well it only takes a few proofs and you won't believe the results. I woukd have saved thousands of dollars had I found these guys before spending endless amounts with long long waits between edits on local designers. After still not happy with the local designers product, I had Stickermule touch up what I submitted and with hours I had exactly what I wanted. You won't get this anywhere else. 

Such a great system!