Just thought I should give a heads up about this. Those "ACME Detective Agency" shirts from Walmart.com . I finally decided to order one today as a late Christmas gift to myself because I was given a gift card for the store. Those shirts through Walmart have unknown shipping restrictions through the site. But get this? Same provider on Amazon is selling the shirt and there the shipping isn't restricted. ... Not because of ordering a T-Shirt but this isn't the first time I've seen P.O. Box rejection. .. Yeah, the gift card was useless on Amazon of course but I didn't want to give up. My new shirt is due to hit my box on the 7th.?