Instruct: Classify Amazon reviews into positive or negative sentiment
Query: not impressed at all with the pump

I bought the pump because I had read the reviews on this product and got the impression that it was one of the best manual pumps. That might be true, but my experience was dissapointing. The pump did not suction hard enough to produce milk. I tried several times through out the day and the pump did not suction out enough milk. Needless to say the pump is sitting in the closet.