Effective massage effect Ideal for treatment of parallel lines of muscles in the neck and back area. The gap between the two fused balls is gentle on bony structures. Also perfect for massaging shoulders, arms, and legs The BLACKROLL DUOBALL is particularly effective for massaging and releasing tensions in parallel lines of muscles, e.g. along the thoracic and lumbar spine - The areas where we feel upper and lower back pain. It can also be used to target the upper thighs, tight hips, calfs and the areas around the achilles tendon. A recent study has identified the DUOBALL as a highly effective tool in the workplace to reduce muscle stiffness and prevent pain symptoms related to prolonged periods of sitting. See the study here. Green production Environmentally friendly, energy-saving production 100% recyclable Free of propellants & chemicals (no glue) Made in Germany Highest quality production Ultra-strong & durable - built to last Won’t get soft or deform Quality management to DIN ISO 9001:2000
