Sorry! This item Is out of stock. ( Granite Gear - Air Cooler 1 Liter Nalgene )
The Air Cooler will help you keep things cold and protected. They are built with a new material called Temptrol laminated to 3/8 open cell foam. Temptrol is a polypropylene based non-woven perforated fabric that is metallized on one side. This new material reflects 95% of the radiant heat, the major source of heat transfer, to help anything stay warm or cold for much longer. It also offers protection from electromagnetic fields for sensitive electronics. Plus they have YKK water resistant zippers.