FEATURES Three-dimensional surface allows tissue to aerate while you roll, promoting the flow of blood and oxygen—the nutrients needed to repair muscles Hard, hollow core hand-wrapped in EVA foam makes it firmer than traditional foam rollers Environmental design uses less foam than traditional foam rollers Compact and travel-friendly Backed by a one-year warranty Weight tested to support up to 500 lbs/225 kg static load Designed to withstand constant, heavy, and repeated use without breaking down - so less need to replace Available in five colours 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 travel companion. The Grid is the most versatile and comprehensive foam roller and workout tool on the market today. The Grid was designed for athletes and people of all types, from long-distance runners and endurance athletes to gym-goers and yoga enthusiasts. Whether you're looking to massage any muscle group, or trying to achieve a killer core body workout, The Grid is certain to suit your needs. The Grid™: Revolutionary Foam Roller