Its a little tough tell about JBXR long sleeves shirts but you can find every type of clothing in a known Wholesale Suppliers Directory specially US based. So its easier to find every kind of shirt or clothing resources. I would suggest you to visit Dailytrader, it works for me always.
Ebay. Or search "JBXR long sleeve shirts" on Google. You will find plenty of sites selling this kind of shirts on the internet.
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