This is a beautiful rug, thick, just nice overall...BUT after only putting it down in my hallway I believe in November, it is no longer straight. Because it is in the hallway on dark wood, it is very noticeable. The only way it will look straight is if I adjust it to have a raised place about 3 inches high, which, of course, just won't work. I bought 4 of these and two 9 x 12s. If the 9x12s did this, it can't be seen, thankfully. Two of the other runners seem to be fine, but I still have one I have not put down. I am hoping that Great Offer Stock will simply replace this without my having to pay for shipping, but that is yet to be determined. I can't imagine why it would stretch. It does not get much traffic as there is a door leading into my kitchen before reaching this in the hallway and the kitchen through the front door or garage is our usual path. If Great Offer Stock would like, I can send a picture to show just how it now curves.