Built using environment friendly EVA Foam in two colour opitions, and uses less foam than traditional foam rollers. Designed to withstand constant, heavy, and repeated use without breaking down - so less need to replace The Matrix deisgn and Distrodensity Zones allows for a more realistic and targeted massage experience Compact enough to be able to incorporate The Grid into any workout routine, anywhere. Use it to challenge balance and core Choose from either the orange or black Grid The Grid: Revolutionary Foam Roller This revolutionary tool is based on a grid system of varying widths and densities, allowing you to take traditional foam rolling to the next level. Intensity levels are in your control by simply repositioning the Grid. Great for general use and core workouts. The Grid: Revolutionary Foam Roller features Distrodensity Zones, Matrix Technology, and an environmentally friendly design. Being only 13" long and 5" in diameter, the sleek design of The Grid makes it an excellent