The Elasto-Gel Cervical Collar helps alleviate pain and discomfort from minor muscular and soft tissue cervical injuries, soreness, stiffness and more. Made to specifically mold to the cervical neck region, this wrap can provide either hot or cold therapy relief for the neck and upper spine areas. This neck brace is made of a tough yet soft, flexible gel that is covered with a four-way stretch, soft lycra material. This allows for maximum conformity, heat transfer, and comfort. For moist heat treatment, heat the neck collar in the microwave or a conventional oven. Simply heat the pack according to the included directions. When a warm wrap is applied, heat quickly penetrates muscles and joints. Elasto-Gel Cervical Collar continues to provide heat for an estimated 20 to 30 minutes before reheating becomes necessary. For cold therapy, place the wrap in freezer. The wrap remains soft and flexible at temperatures as low as -20 degrees F. Usually the cold wrap will numb the treated area within 5 minutes without the harsh shock and pain that is sometimes experienced with ice or ice water treatments. The wraps will remain cold for approximately 20 to 40 minutes. Store the Elasto-Gel Cervical Collar in the freezer until ready to use. Elasto-Gel Cervical Collar Features: Microwaveable. Will not leak if punctured. Will not dry out. Conforms to cervical spine curves. Indestructible gel, cover and strap are all latex-free. For Hot or Cold therapy treatment. Elasto-Gel Cervical Collar Specifications: Measures: 20 inches long, 10 inches wide center, 4 inches at front closure. Straps measure: 2 x 6 inches, velcro front closure.