CamelBak’s WaterMasterª and WaterPro™ Hands-Free Hydration™ systems are backpack-style devices that hold up to 2 liters of drinking water in an enclosed, insulated pack. The packs keep water clean, cool and easily accessible through a delivery tube that reaches from the pack to the wearer’s mouth, so work doesn’t need to stop when thirst strikes. Because of their convenience, these water systems work well for recovery efforts, such as the World Trade Center cleanup, to which CamelBak donated WaterMasters and WaterPros.