Hothands Body Warmers are rectangular shaped single-use air-activated heat packs that contain and adhesive on one side so they stay in place where you stick them. They provide up to 12 hours of continuous warmth for the body.FeaturesUp to 12 hours of heatAdhesive on one side so it stays where you stick itReady to UseAir-ActivatedSafe, Natural HeatUltra ThinContains one warmer per package