Safe, natural, long-lasting heat. Odorless, disposable, single-use item - do not apply directly to skin. TSA approved. Made in USA from domestic & imported materials. No shaking or kneading required. Activate by removing from package and shaking. Heat activates in 15-30 minutes. Re-expose & shake for decreased heat. Dispose with regular garbage. Environmentally safe ingredients. Multipurpose warmers for hands, feet, and body.