Elasto-Gel Cervical Support Rolls Elasto-Gel Relieves Stress! Use to apply hot or cold therapy to the cervical area while comfortably supporting the neck when in a supine position. The tough, flexible gel will not leak if punctured and the 4-way stretch Lycra cover will help ensure product durability and effective therapy management. Flexible gel rolls with breathable stretch cover. Heat in the microwave and store in the freezer. Provides 20-40 minutes of treatment. Available in 3 inch or 4 inch diameter. Length: 10 inches Weight: 3 inch-3 lbs 4 inch-5.2lbs