It says the name of the shipping company on it, I believe, though my memory may be faulty. Anyways, my mother, who I live with, actually went so far as to feel up my package (lol) to try and see what it was, and all she could come up with was that it was some sort of clothing.
I later showed her what it actually was, BUT then lied to her and told her it was for back pain and that its magical properties of binding was just a side effect. I'm not sure how comfortable you are with lying, but that's just what I did.