The Fitness Mad Studio Pro EPP 45cm Foam Roller is ideal for self-massaging and improving circulation. It can be used prior to exercising in order to warm up muscles and reduce the risk of injury.  It can also be used after working out to relax aching muscles and roll out lactic acid that has built up during exercise. It is ideal for rolling out your arms, back, glutes, hamstrings, thighs, calves and quads.This massage roller is constructed using high quality EPP, which is very durable, lightweight and recyclable. It is very strong and energy absorbent.