It is a functional eye mask,which can be chilled in the freezer as an ice pack. It also can be used as a warm eye mask to be heated in the microwave oven .Can be used on eye,face,forehead for relief and therapy from dry, irritated or puffy eyes, dark circles, tension, bruising and muscle pain,sinus discomfort, migraine, allergy irritations and other eye issue. Sealed the eye mask in a plastic bag and then place in fridge for ice pack. chill it for 1-2 hours , or freeze it for 30 minutes.Or place in microwave for 10 seconds at a time for warm mask. This gel pack can stay cold for 15-20 minutes, and the best therapy time is approximately 15 minutes recommended by doctor and therapist. When you feel tired or tension or migraines, the cooling eye mask can makes you feel peace and help you relieves the pain.This eye mask fit for women,girls,students or office worker who stay in front of the computer for long time; or people who stay up late and troubled with dark circles,dry eyes. These eye masks latex free, and non-toxic, no break, no leakage, long life time.