Although vinyl, up close the front of each pad is very finely textured which helps with tracking. On the flipside, you can either opt for a thin 1.5mm non-slip backing or a slightly thicker, more textured 3mm back. Neither one really slips, but if I had to choose a more stable one I'd go with the latter. Also, the thicker pad has a layer of cushion between the two surfaces, so it's nicer on the wrists than the thin pad. Neither one can be rolled up due to the semi rigid vinyl matte top layer.