The Amazon Basics High Density Foam Roller is a versatile and lightweight exercise tool suitable for full-body workouts and recovery. With a diameter of 6 inches and a length of 24 inches, this black and blue speckled foam roller is perfect for indoor and outdoor use. Made from firm polypropylene material, this roller is ideal for gym training, yoga, physical therapy and other fitness activities. Weighing only 9 ounces, it is easy to carry and use for various muscle groups to aid in muscle relaxation and injury relief.