Description:The Heat Factory Body Warmer is a soft, light-weight pouch containing an inert mixture of iron powder, charcoal, salt, water and vermiculite. When exposed to air, a natural exothermic reaction generates consistent and prolonged heat. The pouch is made of soft cloth lined with a very thin layer of porous plastic for maximum durability. The warmers are odorless, non-toxic and air-activated.Height (In):6Width (In):9 Depth (In):2.5 Weight: 1lb 6ozThe Hand & Body Warmer Pack offers 10 large Body Warmers as a convenient grab-n-go warmer pack for family outings, camping weekends or tailgate parties. Large Body Warmers last 20+ hours and are ideal for sleeping bags, coat pockets, back wraps, and any place where soothing heat is desired. Keep handy in luggage, car, or gear bags for anytime use. Sold 10 large warmers per pack.