Bests & Worsts Reviews from Amazon

I've had the mat for a couple of weeks and I'm very impressed. I see no indication the mat will dimple where the chair rollers rest on the mat. It has a very solid surface. The cheap mats from Staples only last about a year and then start to crack. The only complaint is that every two days I have to adjust its position because it shifts away from the desk (about an inch per day). UPDATE: I got fed up with the mat shifting every day so I put two eye screws in my desk (on either side of the footwell) and drilled two holes in the front of the mat and secured the mat with zip ties. Seems to work pretty good, but the product should have been made to prevent shifting. UPDATE 2: After 1.5 years it is starting to crack in several places. Downgraded from 4 stars to 2 stars. Maybe 1.5 years isn't bad compared to others, but for the price it should last forever.