The weight of the flaxseeds provides the perfect amount of acupressure to reduce the puffiness of the eyes while the lavender flowers lead to relaxation. Also the eye pillows can be cooled down in the refrigerator and placed on the eyes for relaxation and rejuvenation.Natural scents of Lavender aromatherapy to help relieve tension and stress Hot or Cold Therapy-heat in the microwave or chill in the freezer Organic Flax Seed- provides accupressure Lavender Eye Pillows completely block out light as it conforms to your face and eyes.