Product Features Use the large ball to target large muscles, such as the glutes, hamstrings, hip flexors, quads, and lats Use the medium ball to target medium-size muscles, such as the pectorals, shoulders, traps, and calves Use the small ball to target small muscles, such as the forearms, palms, and feet Material Dense foam and rubber blend is durable Intentional texture on each ball allows you to target stubborn knots and elevate your massage experience Contains Latex: People with rubber or latex allergies should avoid contact with this product as it contains natural rubber and may contain latex Materials, Care and Origin Materials Body:67% Ethylene Vinyl Acetate, 33% Rubber (Natural), Care Wipe Clean With Damp Cloth Brand New With Tags