Conforms to Your Body to Deliver Soothing Relief Fast, Effective Relief. Includes Adjustable Strap. Helps Relieve Sprained Ankles, Knee Injuries, Elbow Pain, Post Exercise Soreness, Arthritis & More. Large Opening Sits Over Your Knee Cap to Preserve a Wide Range of Motion. Gel Beads Send Relief Directly to the Pain. Flexible Velcro Strap Keeps the Wrap Comfortably in place, Even During a Workout. Chill it in the Fridge or Freezer for Analgesic Cold. Pop it in the Microwave for Penetrating Heat. Holds Therapeut.