They are nice looking, and fit together well but not for weights/workout equipment as advertised. Bought 3 packs for garage gym, and was impressed with how nice they felt to walk on. However, if you so much as drop a dumbbell/barbell/weight from a height of 2 inches or more, it will cut the material. These mats are better suited for a childcare center or to be placed under stationary equipment (bikes/row machine/treadmill). Feeling frustrated that I paid for something that is clearly advertised as gym appropriate, but will have to be replaced soon.