DescriptionThe fast pace of modern life, working under a lot of pressure, posing a great threat to people's health. This massage balls may reduce blood pressure, Promote brain health, relieve the tension, and eliminate fatigue. It also helps relieve muscle soreness and effectively relieves pain and stiffness in the legs, shoulders, neck, foot, back, hip and glutes.Features- Color: Black.- Material: Silicone.- Size: Approx. 12.5 * 6.3 * 6.3cm/ 4.9 * 0.91 * 0.91 inch(LWH).- Dredges collaterals, regulate blood circulation, plantar fasciitis pain relief and prevention by loosening fascia and increasing blood circulation- Release tight muscles in your neck, shoulders, back, hamstrings, glutes, abdominals, calf muscles and even your feet.- Can effectively regulate the function activity of the cortex of the brain. Regulating the nervous system, improve sleep quality.- Enhances performance by massaging out trigger points and muscle knots to help improve movement efficiency and increase circulation and flexibility.