Set of two 64-oz replacement pouches for the Sawyer MINI, Squeeze, Micro Squeeze, and Dual Threaded MINI Water Filtration Systems High-performance 0.1 Micron absolute inline filter fits in the palm of your hand and weighs just 2 ounces Can easily be filled in any lake, stream, or river, and under a faucet; attach directly to a Sawyer MINI, Micro, Dual, or Squeeze Water filter for direct drinking or filtering into containers Great and convenient for use when potable water is not available; use in outdoor activities, and in hiking, backpacking, camping, travel, and emergency preparedness 100% of the MINI, Micro, Dual, and Squeeze Water Filter units individually tested three times to performance standards by Sawyer