The liquid cooling system, called ThermoCore™, provides up to 50% better heat extraction compared to best in class cooling vests, reducing the wearer's perception of atmospheric temperatures by up to 20°F. The system includes a reservoir that feeds cool water through the patented polymer microtubing sewn throughout the pack's chest, shoulder, and back, which captures heat from the body. Designed for the realities of climate change, Honu enables better endurance, higher performance, and faster recovery for athletes and outdoor enthusiasts in increasingly hot environments.