This is absolutely one of the best products that I've spent my money on. It is a bit pricey at around $200 for the travel system, but it is absolutely wonderful. It clarifies the water, and for those of you that are concerned about the amount of fluoride in your water, the Berkey water system filters it all out. It filters out 99.999999% of known particles in water. In fact, if you put red food coloring in it, the Berkey system is so strong that it actually filters out the food coloring from the water.