I've had this mat for 5 years, and thought I should put in my two cents.  It's a perfect exercise mat, much better than exercising on carpet and likely much better than those thin roll-up things.  We even took it to a party at a campground to be sure we'd have something comfortable to sit on.  I keep it propped against a wall in the hallway, and the handles make it convenient and easy to carry.  It's the perfect size and I am completely satisfied with this purchase.