Instruct: Classify the given review into positive or negative sentiment.
Query: Great filter for a good water purifier system

I have a water purifier that is at least 6 years old. I searched Amazon and found an exact replacement filter. Even though the color was different, black instead of red/grey, everything else was a spot on match. Couple this with a water jug and virus purifier tablets and you have a viable nearly anywhere water system. The filter is easy to install,easy to clean and light enough to fit in your bug-out pack.