Fleece carpet on a light backing.  It's been on the floor for a week now and has a crease about every 6 inches.  That's a lot of creases in an 8x11 rug.  Carpet is not rolled when shipped but rather folded.  I tried ironing the creases but ended up scorching the fabric.  Next thing to try is a steamer.  

Pros: colors are nice, delivered as promised.
Cons: manner in which it is shipped.