The Soft RAD Roller Massage Tool is a soft-density roller that is a great self-massage tool that is ideal for upper back relief. This peanut-shaped roller is designed to fit comfortably between the shoulder blades for effective myofascial release and pain relief. The Soft RAD Roller Massage Tool has a unique design with more surface area than traditional tools and fits more comfortably on the spine. The groove in the middle of the roller is called a Spinal recess and allows the roller to avoid contact with the delicate bones of the spine and keep the release in the muscles. Users with hunchback posture or upper back pain will find this soft roller helpful for releasing tight mid-thoracic muscles, which can help users improve their breathing. The Soft RAD Roller is perfect for users new to rolling massage techniques and should be used to treat the neck, scalp, or back for light pain levels. This smaller size roller can be used in areas where large foam rollers are too large to reach, allowing users to target deep musculature. This massage roller can be used on its own or inserted into the slots of the RAD Block for hands-free, isolated pressure in hard-to-reach spots. This roller features soft firmness and is recommended post-treatment on the legs, the back, or the neck. Soft RAD Roller Massage Tool features soft firmness and is ideal for tension relief in the upper back and neck associated with hunchback posture, upper back pain, sore shoulders, muscle tension, fascia pain. RAD Rollers are the functional, portable solution for treating client muscle aches and soreness, and are available in soft, original, stiff, and XL densities. Softer densities are better for newbies to rolling, or more sensitive areas. The more dense the roller, the higher the intensity for digging into muscles. Soft RAD Roller Massage Tool User Guide Soft RAD Roller Massage Tool Specifications: Color: Green. Materials: 100% eco-friendly silicone. BPA, latex, and plastic free. Size: 4.9 x 2.5 inches. Weighs: 13 ounces. Packaging: Recycleable. Warranty: Lifetime manufacturer warranty on all RADRoller products; please contact the manufacturer for more information.