Katadyn Exstream XR Purification System

The best selling ultralight water bottle purifier. EPA registered to remove all classes of microorganisms, including viruses and Cryptosporidium. The lightweight, simple design fits into standard water bottle cages and cup holders. High capacity Exstream XR is ideal for backpacking and trekking. Carry loop for easy attachment to packs, kayaks, etc. Olive Drab color.