What kind of pad is it? The only pad I've seen at my local Walmart is a plain, flat blue mat with none of the nubs I'm looking for.
This looks like what I've seen at Walmart:
But I'm looking for something with either hill and valleys or nubs/protrusions; something like this:
The Z-Lite may be the only real option I have, but I thought I'd look for something better suited to my idea...