The Tiger Ball 5.0 is a lightweight foam roller ball, great for travel, and perfect for bigger muscle groups, such as hips, hamstrings, glutes, back, neck, and shoulders. Ball massage surface provides targeted muscle care and relief of minor muscle aches and soreness. Use your weight as leverage and let the tool do the work. Use on the floor, chair, bed, or wall. The ball is surprisingly durable, firm, and lightweight at only 3.2 ounces. It won’t change shape despite the pressure or body weight. 5.0” massage surface.