The tubing frame that connects to the wheels for portability had big dents in the tubing, so there was no way that this part would connect. The wiring, to the adjustable magnetic resistance with 8 levels, was damaged. The non-slip surface had a lot of oily residue on it and the magnets that control the non-slip surface (the part you run/walk on) were cracked and had fallen out and they landed on our wood floors denting them. My husband and I were really looking forward to getting and using this treadmill. The reviews we read were all positive which also helped us in deciding to purchase this treadmill. We must've been the only one to have purchased a defective treadmill. As such it was enough of a disappointment NOT to re-order.