I'm just now having to order a replacement for the previous one I ordered almost 2 years ago. So well worth the $30 something I paid for it. My office has medium pile carpet and I'm about 220lbs, so I was pushing the limits for it. The mat did start cracking months ago but not tot he point it caused any issues. Today I noticed the crack formed a hole and a small piece broke out from where the chair roller always lands. So even though it is still usable I ordered a replacement just to be on the safe side. I have used mats costing 5 time more and have lasted only a couple months, so a $30 one with free shipping w/ Prime that lasted almost 2 years, Well worth the money and chance I took on it.