These marvelous Nelly Eye Packs are filled with 100% natural material. The gentle weight of this eye pack naturally eases tired eyes. The scents of Lavender and Chamomile help you relax, while the therapeutic moist heat can be used to help alleviate the discomfort of sore throats, earaches, arthritis, colds hands or feet, sinus problems, menstrual cramps and back pain. To create a cooling compress, simply place in sealed bag in the freezer until chilled. For a warm compress, microwave 30 to 60 seconds until warm. Check the temperature before applying to avoid extreme temperatures that might hurt the delicate eye area.