Bests & Worsts Reviews from Amazon

This product has everything needed to simplify hiking and carrying water. As a nurse, the dialysis system of water filtration made perfect sense. I bought it for my son, with a platypus 2 liter bag, to hike the PCT in Oregon. I thought it was brilliant. And it is. Except that on day two of his hike the O ring to create a seal transferring water into the reservoir- broke. Other PCT hikers were familiar with the problem on the mini. Apparently the regular size Sawyer filter does not have the same problem. Sawyer company- fix your O rings on the mini and you go from a 1 star to a 5!