Apply Hot or Cold Therapy for the neck for that relief you really need! Perfect to treat fibromyalgia pain and discomfort. Both cold and hot relief for fibromyalgia discomfort! A Single Product for Hot or Cold Needs! The Elasto-Gel Cervical Collar for your neck area 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. The Elasto-Gel Cervical Collar is made of a tough, flexible gel that is covered with a four-way stretch material. This allows for maximum conformity, heat transfer, and comfort. Both durable and "user friendly" the collar easily forms to your neck shape.... even when first removed from the freezer! For moist heat treatment - Heat in Microwave or 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 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. Care & Cleaning Summary - (Directions Included) Always store this product in a re-closable bag when storing in the freezer. Remove the outside cover and hand wash in cold water, with mild soap. Hang to dry. Wipe the white inner cover down with a damp (not wet) cloth using mild soap or disinfectant. Allow the product to fully air dry before continuing to use.