Thin, 3″ x 2″ disposable, instant heat packet that lasts up to 8 hours. Hothands ® warmers are single use, air‐activated heat packs that provide everyday warmth and are ideal for keeping the hands warm when the temperature gets cold. Hothands ® contain ingredients like iron, activated carbon and water. Once these ingredients come into contact with the oxygen in the air, the ingredients oxidize and produce heat. The combination of ingredients has been specially formulated to ensure a constant and comforting heat for a wide variety of uses. Available in 6 Pack, 18 Pack & 36 Pack (Box) increments. Click or Scroll Down for more details