The Tiger Ball 4.4 Peanut Foam Roller is a revolutionary foam roller great for deep tissue muscle massage. This patent-pending inventive tool offers even, penetrating and controlled deep muscle massage with “Gription” on the muscle and fascia. The signature Tiger Tail “fingerprint” pattern helps it grip to surfaces to keep it from sliding around, helping with sustained traction on the muscle. The 4.4 in diameter and curved massage surface provides targeted muscle care and relief of minor muscle aches and soreness. The “groove” in the peanut offers perfect spinal spacing so that back massage hits all the muscles and avoids the spine.