this mat works good for what i use it for on a TV tray, I was hoping for it be abit bigger but fits a Normal size PC on it. if your using it for other smaller .. I would say  but this ...but you mite wanta add double-sided tape to the table its on, It like to roll back into a tube shape. That is my input on this matter of a Anti-Static "mat".  Oh if you don't use the wire to ground it. It doesn't work at all. kinda of defeating its' purpose. Make sure you clip that button "on" and clip the other end to the ground of the PLug or "Grounded pipe,outlet,Case of the product or PC!".
this mat works good for what i use it for on a TV tray, I was hoping for it be abit bigger but fits a Normal size PC on it. if your using it for other smaller.. I would say  but this... but you mite wanta add double-sided tape to the table its on, It like to roll back into a tube shape. That is my input on this matter of a Anti-Static "mat". Oh if you don't use the wire to ground it. It doesn't work at all. kinda of defeating its' purpose. Make sure you clip that button "on" and clip the other end to the ground of the PLug or "Grounded pipe,outlet,Case of the product or PC! ".