Dynarex Reusable Hot and Cold Packs are used to help relieve sore muscles, arthritis and common aches. The Reusable Gel Packs can be frozen or heated for hot /cold therapy and are able to retain their temperature for up to 20 minutes. The Dynarex Reusable Hot and Cold Pack are ideal for rehabilitation facilities and personal pain relief. Features

• Delivers soothing relief from sore muscles, arthritis, sprains, swelling, common aches and bruising
• Retains a therapeutic temperature for approximately 20 minutes
• Freeze or microwave
• Reusable and non-toxic