UNPACK IT IMMEDIATELY. The mat does the job and is good quality, however, it comes rolled up. (Understandably) It takes some serious time to lay flat. We placed it under our large area rug in the living room for a week to flatten it out. The only reason I gave it a 4 star is because there aren’t carpet grips“pokey” spikes (don’t judge my verbiage lol) on the underside to keep it from sliding. I have it under my desk and it still moves a TON when walked on.