Airia Sub Zero-2 HPI (5LB. Brick) Airia "Sub-Zero" Cooler packs are the best way to keep food and drinks cold for extended periods of time. The active ingredient changes phases, or freezes at a temperature just above the temperature beverages would freeze. This material manipulates the temperature of drinks to constantly remain even colder than ice. Manufacturer: Airia MFG Number: A0016 UPC: 856170006188