1 Cold compress: put it into the refrigerator, after pre-cooling (4-10 degrees refrigeration) for two hours or frozen for half an hour, you can wear it on the face. (It can be stored in the refrigerator for a long time. In order to prevent tainting by odor, it is best to put it in a cool bag.) 2 Hot compress: put it into warm water of 60 for about 5 minutes or in the microwave for 30 seconds, then heat the other side for 15 seconds, you can wear it on the face. (It is usually recommended to heat in water and heat it evenly.) 3 Effect: This face cover can be used for both hot and cold compress which can helps relief stress and puffy eyes. 4 Comfortable: The gel beads in this face cover are flexible enough to fit snugly around your face. 5 Material: Face cover is made ff vinyl with a freezable and gel. Lead and BPA-Free, pressure testing, no break, no leakages Package Included. 1*Face cove Item Type:Face cover Color: As Picture Show Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. YJL official store