Just another thought - i recently shipped several "couch" quilts - i bought a "Space Bag" big enough to hold them - packed them, sucked the air out - and shipped in a much smaller box. Didn't change the weight of course -- and the space bag protected them in the box (in case it got wet) - I ship everything FedEx ground --- and i ship a lot as all our family lives 1300 miles away....had too many problems with UPS over the years...don't use the Post Office either. A little more expensive, yes...but you can track it all the way.