Here's what other sites are saying:
The Exstream Orinoco is a convenient alternative to pump-style purifiers. No hassle over unpacking, assembling, pumping and (ugh!) separate containers.
The Orinoco is perfectly suited for the one day trek into the outdoors. Fits all standard bottle holders (backpacks, bicycles, boats, fannypacks etc.) 1 Exstream 26 oz. (bicycle style) sport flask. 1 ViruStat microbial water purification cartridge. Filter