Hand Warming Packs: Self-contained packs add heat anywhere when exposed to air.Features* To activate, just open the pack* All natural ingredients heat up when they contact oxygen* Seal from oxygen in Zip-Loc bag and reuse the next day* Hand style warms up to 12 hoursApplication:* Construction* Freight/Baggage* Drilling/Mining* Oil/Gas Refining* Iron/Steel Work* Delivery/Service* Landscaping/Grounds* Cold Storage/Warehousing* Material Handling
