Squeeze Water Filter
One of the lightest water filters on the market, and a perennial favorite among value driven lightweight hunters. At 2.3 ounces for the filtering element alone, the Sawyer Squeeze filter is an incredibly affordable water filter in a small, lightweight package. The Sawyer Squeeze works for a week long backpack elk hunt, chasing mule deer in the desert or wherever else your hunting travels take you.
To use the Sawyer Squeeze, simply fill the water bag that comes with the filter, screw the water bag into the filter and squeeze away. If you're looking for a relatively cheap, ultra light water filter, you have found it here.