It has been designed to provide added support in difficult poses or can be used for smooth and consistent release before or after any kind of workout. The special pattern of the roller puts pressure on different areas of your body, stimulates blood circulation, and provides instant release to your muscles. Hollow Foam Roller is made of lightweight materials. Its solid PVC core will provide extra support to ensure it keeps its shape. EVA coating is soft, easy-to-clean and durable.