When you IMPORT material, it's the job of the EXPORTER (and he's held liable) to accurately desribe what's in the package. Even if you'd like to claim them as "prayer shawls", the exporter would have to risk it and put that on the customs declaration.

At least, that's how it is when we order material. about 1/2 the time we get hit by customs, about 1/2 the time we skate through. It's a crap shoot. I've heard that Canada's customs are much stricter and catch much more product.