Training parts: arms, muscle relaxers, feet Department Name: Unisex Model: massage ball Dimensions: 65mm Function: Muscle relaxer Material: rubber Exercise type: Muscle relaxation Massage Ball 6.3cm Fascia Ball Hockey Ball Yoga Muscle Relaxation Pain Relief Portable Physiotherapy Ball Chin Exercise Ball Durable Rubber Massage Ball Trigger Sports Fitness Hand and Foot Pain Relief Plantar Fasciitis Reliever 6.3cm Ball Features: It is convenient for you to leave messages at any time and relieve fatigue It can massage the back, relax muscles and promote blood circulation. Relax tense muscles after exercise. It can massage fat areas, strengthen metabolism, and eliminate water and fat. Specification: Diameter: 6.3 cm Color: purple, red, blue, green, yellow, orange Packing list: 1 x exercise ball notes: 1.Asian China sizes are smaller than US or European sizes, please allow 1-2 cm differences due to manual measurement. Please check the size details above carefully. 2. The product is measured manually and there will be slight deviations. Hope you can understand. 3. The color of the item displayed on your computer monitor may vary slightly due to differences in monitor calibration.​ Cleaning and maintenance: Avoid long-term exposure to sunlight or humid environment to prevent premature aging of raw rubber Washable and dryable