The SMI Cold Therapy Universal Wrap goes on top of, or underneath, clothing to effectively penetrate the area to provide comfort and relief from pain and/or swelling for 2-4 hours. One frozen gel bag enclosed in a white, antimicrobial bandage layer stays firmly in place. One additional gel bag is included to ensure you always have a frozen gel bag ready to go when you need it most. See below for more information. Made in the USA. One size fits most. Includes 1 Wrap & 2 Gel Bags.