Takes a while to straighten out. The way they roll up the larger rugs creates a crease thats just hollow from underneath. Please note that this rug is not mostly black. Its more white and gray with black splotches. Youll have a hard time vacuuming this rug because of the synthetic shag material, and it doesnt have much cushion at the base. I bought 2 large rugs and 2 runners for 700. If it wasnt for the discount, Id probably return all of them and pay for shipping to get them out of my home.