HRoth - 1:54 am on Dec 7, 2012 (gmt 0)

I was told by post office employees that as long as you don't have to tape the envelope closed, whatever fits in the envelope is fine. That said, if you are trying to ship garments using the media mail rate, then yes, your customers will get charged the regular mail rate if the post office finds out. The media mail rate is for media mail only.