A caution for anyone sending a Priority Box through USPS. Be sure you check that the ZIP code that the postal worker codes in is correct. It will show on your receipt. I didn't realize that this Christmas when sending a box of cookies to my sister in Madison, Wisconsin. The ZIP that was coded on the USPS label differed by one digit; the box went to Bozeman, Montana. Of course, they couldn't deliver it in Bozeman, so it went back to the regional office in Billings. But then it got caught in a loop. Bozeman, Billings, Bozeman, Billings, Madison, Milwaukee, Billings, Bozeman, Billings and finally Madison and delivered. A box of homemade Christmas cookie crumbs was delivered on January 3. In case you are wondering, the address I entered was correct. The other three boxes I sent were delivered properly. I blame myself for not checking my receipt.