The Body Sculpture ball duo BB0122 massage roller is ideal for massaging the paraspinal muscles. Thanks to its central indentation, it perfectly adapts to the shape of the back, ensuring easy and effective massage. Now you no longer have to worry about back pain after a hard day. The device is lightweight and compact, so you can carry it with you in a purse or backpack and use it whenever you need it. The product isn't too hard, so anyone can use it. It's useful for relaxing muscles, as well as warming them up and preparing them for physical activity. When using a roller, it's important to roll slowly and carefully, moving it over specific muscle groups. Remember that no one body part should be massaged for longer than 3 minutes. The roller should be placed along the muscle fibers. When you hit a painful spot during the massage, hold the roller there. For effective massage, remember to place the roller on a hard surface. Technical data: Material: EVA Color: black Length: 12 cm Diameter: 6.5 cm Intended use: for home use Warranty: 2 years