<div> Use GRID for self-massage and roll through tight muscles. The three-dimensional surface replicates the feeling of a massage therapist's hands.</div><div> <ul><li>Sleek Design, 13 x 5" in diameter, makes the Grid an excellent travel companion</li><li>Three-dimensional surface allows tissue to aerate, promoting the flow of blood and oxygen</li><li>Hard, hollow core hand-wrapped in EVA foam; uses less foam than traditional foam rollers</li><li>Weight tested to support up to 500lbs</li><li>Hard, hollow core hand-wrapped in EVA foam; uses less foam than traditional foam rollers Weight tested to support up to 500lbs</li></ul> </div>