Title: Cheaper than the black colored model
Review: Maybe this gray model is an older model, but it works fine and is cheaper than the black model by about $15-20. It has a nozzle which fits snugly onto most types of water bottles (large or small mouth). The pumping motion is fluid and easy. It pumps water at a pretty quick rate. I know it pumps faster than many other brands based on what some friends have told me.The hiker PRO model has a removable screen over the filter which is a great feature.
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