I used these for a company - they loved the idea of using this for a line of merchandise to have available for their employees. Quality is great and comfortable.
Really like these thicker quarter zips we bought for our business. We were able to use a cricket to iron on customer logos etc. Size wise, the Larges are true Larges, maybe a bit longer than most. Service wise, Jiffy has FAST shipping and has been easy to work with. Will keep recommending them.
Our company does "casual Friday" apparel in a financial institution, with the stipulation that staff wears our logo apparel and nice jeans, etc. These tops are super-popular with everyone and we even had reorder requests!