GoFit's Massage Ball reaches deep muscle tissue—targeting knots and trigger points to relieve pain and soreness. Made of dense lightweight foam with a solid core, this unique therapy tool targets virtually all muscle groups. It has a soft textured surface to keep it in place while you roll away muscle pain. Leaning on a wall or laying down, simply press and roll. You decide how much pressure to apply for maximum relief. Ideal portable therapy, the Massage Ball is part of GoFit's Muscle Pain Management System.