Our most versatile therapeutic pack. This innovative, heatable joint/neck pack attaches with Velcro around your neck, elbow, knee, or lower back to provide hot or cold therapy even when you're on the go. This pack is designed after the cervical neck collar to support your head and neck. Great to use for relief from sports injuries. Includes hand washable cover and Velcro extension for the back. 6.5" x 17".