When I wanted to upgraded my cutting table I searched for one to fit the table I had and couldn't find one so enlarged the table to fit the cutting mat I could find out there. Got one called Alvin Green that's green on 1 side and black on the other side. Both sides have markings on them, its self-healing and 4 x 8. Comes rolled up so will take a little bit of tiime to relax but I love mine and have had it for a number of years now with no complaints. Here's the website I went to.
www.gwjcompany.com