Designed to stimulate blood flow, the Merrithew® Weighted Massage Roller’s spiked edges provide relief for tight muscles and joints. Each roller weighs .5 lbs., which adds force to any massage without applying too much pressure on the skin. The lead-free, PVC material offers a firm feel, while still being soft to the touch for the perfect blend of rigid and relaxation. FEATURES: PVC massage rollers with spiked edges for muscle penetration Spikes knead body and contours to stretching soft tissue Measures 5.3’’ Width x 4.25’’ Length Model: ST-06181