My favorite gap pair disintegrated two years ago. I put them on fresh out of the dryer and they ripped in half... My mom had bought them about a year or two before she gave them to me and I'm pretty sure they were all cotton. She gave them to me in 04 and I wore them constantly. I went ahead and ordered a backup pair in early 05 for when my favorite pair gave out and they weren't the same at all! They fit way too big and stretched too much.
Ever since my favorite pair of Gaps self-destructed, I haven't found a good pair at gap. Oh well.