(1)Why choose our Foam roller set? Our massage roller stick&ball set are made of ECO-Friendly & High density Polyurethane foam material . It has the advantage of Nontoxic, longer life time and soft but supportive than any other foam.(2)THE ULTIMATE FOAM ROLLER SET – The only foam roller set that includes an 17” high density, extra firm expanded foam roller and a massage stick, a deep tissue massage ball. The complete all in one set for serious athletes, yoga enthusiasts and massage therapists.