TRIGGERPOINT Performance Therapy Grid Patented Multi-Density Foam Massage RollerECO 30% renewable bio based materials, including bamboo, straw and wood; comes in recycled packaging HARD HOLLOW CORE hand wrapped in EVA foam makes it firmer than traditional form rollers THREE DIMENSIONAL SURFACE allows tissue to aerate while you roll, promoting the flow of blood and oxygen; the nutrients needed to repair muscles MEASURES 13" x 5. 5" with a 500 point weight limit INCLUDES access to Free online instructional video library on foam