Mueller Reusable Beaded Hot/Cold Pack allow the therapy pack to conform to contours of your body. Reusable and soothing. Can be microwaved for heat therapy. Store in freezer for cold therapy. USE #1: Mueller Reusable Beaded Cold Therapy is reusable and soothing; this pack can be stored in the freezer for cold therapy. The gel beads allow the therapy pack to conform to the contours of your body. Mueller Reusable Beaded Cold Therapy is an excellent tool for first aid or as an easy, effective treatment of pain and swelling from muscle or joint injuries and ailments; measures 9 inches long by 4 inches wide. USE #2: Mueller Reusable Beaded Heat Therapy helps relieve pain and swelling; it provides an effective and safe therapy treatment that is often referred by medical professionals. Mueller Sports Medicine has been a trusted leader in sports medicine for over 60 years and is committed to helping you reduce pain. Hot/Cold Bead Therapy Pack, Pink (must be purchased in qty of 6)