Custom printed head and sinus thermal wraps bears an adjustable elastic strap with adjustable hook and loop fastener. This aqua bead gel therapy pack is microwave and refrigerator safe. You can microwave it for 30 seconds or dip it in bowl of hot water for 5 minutes before the use. For cold use , it is advisable to put it in freezer or refrigerator. You can read the general instructions printed on it for more idea about using it. You can also use it in other parts of the body. CPSIA and TRA compliant. Request a quote to know what you may save on bulk orders of these personalized head and sinus thermal wraps.