Instruct: Classify Amazon reviews into positive or negative sentiment
Query: It sucks but it won't let go!

I've heard so many rave reviews that when I lost my Purely Yours, I got this one (my son was not nursing so often by then). I was disappointed. My hand hurt from having to squeeze the pump. I guess I should expect that, given that it's a handheld manual pump. Well, I didn't think it would be that tiring. Both my hands were tied up when pumping both sides. The suction was too much. It would release, so I had to let air in every so often so my nipples wouldn't get sucked into the bottle! Well, it wasn't that bad, but it really wouldn't release. The output wasn't what I'd like, either. Maybe I'm just used to the electric variety. This pump would be okay for light pumping but not for working moms.