TBK Industries KoolerGel The Ice Extender LLC Gel mix that extends the life of ice in coolers, ice chests and bait tanks When frozen, it is colder than ice and lasts 30%-40% longer than ice Reusable, economical, and perfect for parties and camping One pack makes enough KoolerGel for at least six 2-liter bottles Non-toxic, non-hazardous and environmentally safe