I only weigh 145 lbs and the floor mat only seems to last 1 year. I don't know what the longevity should be but I feel it should last longer that than before cracking and breaking.
It is a very stiff shiny but not rigid plastic. It was not wrinkled and immediately lay flat. Does not give off any odour. Does everything you would hope a chair mat would. I strongly recommend it.
Originally I ordered a mat that was not only too small but way too thin. I was extremely pleased when this new purchase was exactly what I needed. Plus it was delivered flat so I didn’t have to go through the period of waiting for it to uncurl.
I had one I bought from you 11 years ago and when it failed I went without. I just recenty got a new chair and it had to have a pad. Your pad fit the bill price wise and size wise for my space. The best part is I ordered on a Wednesday and received it on Friday the same week with free delivery. Can't be beat.