Very thin and hard to believe its really.5 inches thick.  This picture is from the back side to better see how thin and wavy it is.  Ive ordered other rugs from Wayfair and they were  .63 inches thick. These rugs were very plush and comfy to stand on.  With this one its like standing straight on concrete.  Ill find somewhere to use it rather than return it,  but I wont buy this brand again.  Very disappointed.