List Price: $36.00 Deal Price: $18.45 You Save: $17.55 (49%)Heat Packs hand warmers last 7+ hours and are ideally-sized for use in gloves, mittens, or pockets. Safe, odorless, and non-toxic. Heat Packs hand warmers contain an inert mixture of iron powder, charcoal, salt, sawdust and vermiculite.Expires Jan 16, 2011