Our GridSoft EPP Foam Rollers and Massage balls are excellent tools when it comes to releasing tension and tightness between muscles, smoothening and lengthening your muscles, and breaking up adhesions and scar tissue. They also promote better blood circulation and are effective when engaged in physiotherapy and rehabilitation. General 2-in-1 Massage Ball and Foam Roller Easy Storage, Massage Ball fits inside Foam Roller Made from High Density EPP Foam Multiple Trigger Points Assembled Size Foam Roller - Length: 33cm, Diameter: 14cm Massage Ball - Diameter: 9cm Max Loading Capacit: 100kg