Southwest Elasto-Gel All Purpose Therapy Wraps Case HC750 by Southwest Technologies GROUP: Orthopedic & Physical Therapy:Hot/Cold Therapy:Packs Item Description: Hot/ Cold Pack, 3" x 3", 25/Case Packaging Desc: Hot/Cold Pack 3X3 Microwaveelasto-Gel All Purp 25/Case Country of Origin: US Harmonized Tariff Code: 3924.90 Product Description: Can be used hot or cold. They provide moist heat and soothing cold. Stays hot or cold for 20-40 minutes. They are covered with a four-way stretch material which allows maximum conformity, heat transfer and comfort. Remains flexible and soft at temperatures as low as -20�F. Does not leak, even if punctured. Microwavable or can be heated in a conventional oven. Guaranteed for six months for manufacture defects.