If you need a foam roller that will not go out of round and provide very firm, focused massage pressure then consider Exervo Nimbus EnduraBead Pro foam roller. Sports teams, athletes, runners and cyclists prefer the very firm massage pressure this roller offers. The Nimbus is also a strong & firm surface for pilates and other weight bearing exercises. Instead of an extruded roller made of foam cells that will eventually break down, the Nimbus heat molded construction stays perfectly round even after very high use by heavy users. Nimbus EnduraBeadTM rollers are made in the U.S. from 100% polyethylene beads- the most ideal material for foam rollers. Our rollers are among the most durable foam rollers on the market today. This roller is rated Level 5 - it"s extra firm with only a little give at the surface. Recommended for users who need a well constructed high density foam roller that holds up to demanding & frequent workouts. Your order from Nefitco Fitness includes a link to our extensive collection of free foam roller instructional videos. Verified 100% black polyethylene EnduraBeadTM molded foam- no imports, foam blends or substitutes. We are the exclusive source for Exervo branded foam rollers. Supplier to PTs, chiropractors schools, universities, government, US military & individuals nationwide.