... ,migraines, toothache and nasal congestion OEM service. hydrogel cooling patch Ingredients: gel patch(high molecular polymer), Menthae and so on.Great features ... of cooling to maximize comfort.4 Cooling effect of each patch lasts up to 10 hours.5 Since it is a ... /5×7cm/4×8cmOr you can trimmed the hydrogel Cooling patch into any size you want.Packaging:1pcs/bagp5bag/box180boxes/ctnExpiration3 ...