Uni-Patch Hot / Cold Pack General Purpose Medium 13 X 27 cm Plastic / Gel ReusableAbout Uni Patch Hot Cold Therapy Pack, 5 x 10 Inch (12 Units) Can be used as hot therapy when motion is limited by stiffness: Heat increases blood flow to the affected area and improves range of motion Can be used as cold therapy when motion is limited by pain: Cold reduces blood flow to the affected area and controls inflammation Description: Hot Cold Pack Uni Patch General Purpose Medium 5 X 10 1 2 Inch Plastic Gel Reusable