The Tunturi Yoga Grid Foam Roller is a versatile and complete foam roller with unique “Distrodensity Zones”. The zones consist of matrixes of different widths and densities with which every masssage can be adjusted to your specific needs. It can be compared to a treatment of a physiotherapist who uses the various parts of his hand for a different feeling during a treatment. The Grid Foam Roller is about 33 cm (13 inch) long and has a diameter of 12.7 cm (5 inch). This makes it easy to carry and to bring along with you. The maximum load of the foam roller is 250 kg (550 lbs). The Tunturi Yoga Foam Roller is perfect to use for your arms and legs.