Metolius XX-Large Crash PadWhen we set out to make our Crash Pads, our #1 priority was to make the best possible landing zone. So we put a lot of time and energy into researching the foam combinations which would absorb the most energy. Result, a combination of open and closed-cell foam. Open cell foam is a great shock absorber, but by itself, it takes a very thick piece to keep from bottoming out. We added a layer of firmer, closed-cell on top of the open-cell to spread the force out, producing a firm shock absorber and comfortable landing. Due to this superior foam combo (energy-absorbent and long-lasting), we've come to be known as having the best high-ball pad out there.