Strauss Grid Foam Roller, 33cm (Purple) and Acupressure Massage Ball, 3.5-inch (Blue) Material: Other In-box Contents: 1 Made of Eva foam, lightweight, soft to touch, rich elastic buffer, surface with massage floating point It can board up the soft tissue adhesion and scar tissue, self-massage increasing blood flow and circulation of the soft tissue Great massager Safe & portable – built from pre-tested PVC material It improves improve blood circulation. Will give you the relief you are want