Combination Therapy: Hot And Cold Fully Flexible For Continued Mobility And Comfort Elastic Straps Provide Gentle Compression And Secure Positioning Remains Cold Long Enough To Provide Therapy While Allowing You To Remain Active Convenient Size For A Painful Back Abdomen Or Hip Patented Natural Crystal Fill For Maximum Moisture With No Allergens - Fill Will Not Decay Develop Unpleasant Odors Or Support The Growth Of Mold And Bacteria Cold One 9 X 20 Maxcomfort? Wrap Three Reusable 6 X 9: Ice It! Gel Packs One Elastic Strap (detachable) Hot One 12 X 16 Microwavable Moist Heat Pack One Elastic Strap (detachable)