DryGuard™ eliminates water overflow caused by a faulty bottle.
It works! Standard feature on the Sierra cooler, DryGuard™ can be retrofitted on any Crystal Mountain, Alpine,Glacier, Mirage or Mogul cooler. Get that "Cooler Confidence". It's like buying inexpensive insurance.

How Does the DryGuard™ work?
The co-injection molded gasket creates an airtight seal inside the reservoir. In the event of a cracked bottle, the manual float shuts off the airflow, preventing water from escaping the reservoir.

5-micron Air Filter: Protects against airborne contaminates from entering the water.