Matt was too soft and sinks into the very short carpet. Chair won't even move. I guess we'll have to order an even thicker one. Says it works up to a 3/4" carpet and this is shorter than that but it still doesn't work.
I have had this product for just a week. It was purchased to put under a rolling chair for my sewing machine cabinet. So far it is working just fine. It seems very substantial and for the light use I make of it it should last a long time. .