The GRID X foam roller is our firmest foam roller. It was created to break through the body’s toughest, tightest trouble spots for relief from intense aches and pains. Dense tissue needs a firmer GRID foam roller to release and
relieve aches and pains. The GRID X can be used to release the calves, quadriceps, hamstrings, back and lats. Weight tested to support up to 550 lbs/250 kg static load.