rubbermaid makes a shelf liner that is a rubberized mesh. i haven't tried it under my mat, BUT i do use it under my sm for less noise and vibration, and under my foot pedal, and to open jars, and line my shelves. i also b ought some really cheaply to wrap some glasses i packed away. i will try it under my mat next. it's very handy stuff. if you have a slippery drinking glass and someone who has trouble in dropping things, this stuff makes a good drink holder, sewn in a tube and slid onto the tumbler ( doesn't have to be a glass).
i'm not affiliated with the product, just use it alot.