Grid Textured Balance Roller Muscle Relaxing Deep Tissue Massage Roller 13.75 inches Long and 6 inches in diameter. This design as the massage roller to promote recovery of sore, tight, and tired muscles. This roller is used for self massages, fitness use and yoga. Comfortable and easy to use.This grid textured roller is designed to stimulate blood circulation, massage muscles and relieve tension. It is portable and comes with a small hand pump in case you want to increase stiffness.