I saw that in the flyer i got in the mail yesterday...from the picture and discription it doesn't look like its a self healing mat...might be hard plastic. I'm going to check it out the price is great. HOpe it is a self healing mat.
Otherwise you might burn through blades quickly.
It says its low density polyethelyne what ever that means...I'll have to look up and see what Olfa's mats are made of.