The Caldera Deluxe 3-Piece Set Includes: (1) 3.5" x 26" Head & Neck Therapy Wrap includes 3" x 16" Therapy Gel pack. Ideal For: headaches, neck pain, sinus pressure, migraines, and toothaches. (1) 20" x 12" Universal Therapy Wrap (Medium) includes an elastic extension and a 6" x 10" Therapy Gel pack. Ideal for: knee, shoulder, forearm, calf, thigh, shin, hamstring, ankle, elbow and foot (1) 7" x 45" Back, Ribs, & Abdomen Therapy Wrap includes two 6" x 10" Therapy Gel Packs. Ideal for: Back, Ribs, Abdomen, Menstrual Cramps. All therapy wraps are machine washable. Therapy Gel packs can be applied either hot or cold.