Made of renewable and bio-based materials, the MB5 Eco Massage Ball is now eco-friendly (EVA 30%, PE 20%, Bio Fiber 40~50%) as part of our efforts to support a more sustainable planet. This deep-tissue massage ball covers large surface areas providing extra leverage for hard-to-reach muscle groups like hips, shoulders, and groin. The MB5 replicates the pressure of a massage therapist's elbow to relieve tightness and restore movement in tight or sore muscles. The 5-inch diameter helps elevate the body to target and release muscle tension for increased range of motion and flexibility. Ideal for relieving tightness and restoring movement and mobility throughout the entire body, the MB5 uses a patented, layered construction made up of different densities to create a deeper tissue experience. The foam surface is easier to clean and more hygienic than cloth and makes the MB5 perfect for everyday and anywhere use.