Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Broke Easily

Used this twice for on backpacking trips on the AT...one week trip and a weekend. Worked very well. Took it on a long day hike and couldn't get it to work...found out that the intake stem was broken. Never put the filter under too much stress for it to break in such a way. My advice...pay more for a better qaulity pump.