... various 2.Uasge: Improve core strength, Increase flexibility,Release tension, Rehabilitate injuries foam roller1.material: EPE,Colorl various ... 2.Uasge: Improve core strength, Increase flexibility,Release tension, Rehabilitate injuriesFoam Rollers can be used in many ... comfortable, durable, beautiful, eco-friendly, You can use it when you do yoga or massage. You can place it under the knees, ...