Each of these massage balls measure 2 ½ inches in diameter and come as a pair in a snug-grip tote. With the precision of a massage therapist’s thumbs, the Yoga Tune Up Therapy Ball Pair provides effective soft tool self-massage wherever you are, whenever you KNEAD. Use them individually for highly targeted, precision rolling, or together as a pair to disperse pressure. *Made of natural latex rubber. Colors may vary.