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.

Features: 

• Twice as firm as the original GRID foam roller
• Sweat proof and simple to clean
• Three-dimensional surface allows tissue to aerate while you roll, promoting the flow of blood and oxygen—the nutrients needed to repair muscle
• Compact and travel-friendly
• Backed by a one-year warranty
• Weight tested to support up to 550 lbs/250 kg static load