To stay cool, you've got to be O2 Cool.

• Position: WHAT'S NEW? - Portable Plus Indoor/Outdoor Fan - Brief article

Granted, being in an air-conditioned room is our preferred way to stay cool when it's really hot out, but what if the power goes out or you're at a Little League game in 90 [degrees] weather? How do you stay comfortable then? A portable fan from O2 Cool, Chicago, Ill., is our best solution.

You can take the cool wherever you go with the Portable Plus Indoor/Outdoor Fan. In addition to the included AC adapter, the fan can operate for up to 72 hours on eight D-cell batteries. The powerful 10-inch blade offers quiet cooling, and the easy-to-hang hook/handle allows users to place the fan in a convenient location.

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The eco-friendly five-inch Rechargeable Portable Swivel Fan can run on four power sources. It has built-in re chargeable batteries that provide cost-efficient portability, an AC adapter to power the fan and/or recharge the batteries, a car adapter for use on the road, or four D-cell batteries for when there is no power and the rechargeables are low. The pivoting fan cage allows you to direct the airflow for the most effective cooling.

When we're involved in activities such as bicycling or hiking where...