This pack consists of non-toxic gel based on unique formula that radiates energy when chilled. It sustains chill for a long time. The gel remains flexible even when frozen.The pack is made of tough, leakage resistant flexible material. It can be comfortably placed on all parts of body. A belted washable cover with Velcro strap makes it convenient for application..Cool Pack is a complete stress reliever. It is an ideal daily practice before sleep. It helps allaying tired eyes, red eyes, watery eyes, conjunctivities, insomania and sinusitis. The usage is most recommended by opthalmologist for individuals exposed to computer screens, TV, Intense lights, driving, high pollution & dusty wind environment regularly. Completely safe and convenient . How do they benefit us:- •Promote healing Inflammatory conditions such as tendonitis, "pinched nerves", and nerve compression syndromes such as carpal tunnel benefit from icing. •Helps relieve swelling Ice and cold treatments constrict blood vessels, helping to decrease swelling. •Relieve Puffy Eyes Gel-filled masks designed for this purpose can be stored in the refrigerator. Pull one out whenever you need it, and allow it to rest on your puffy eyes for 10 to 20 minute.