Review on Upgrade Your Spectra Pump: Nenesupply Tubing - Compatible With Ameda And Avent - Replace Your Spectra Accessories by Maurice Arnold

I like that these tubes are a little longer than the original Spectra tubes. It makes pumping at work easier, that I can leave the pump at the edge of my desk, and hook the tubes up each time I pump, instead of having to move the pump closer each time. There is more room on my desk for me to get things done while I pump.My only concern, is that after 4 months they've started to discolor/turn a little yellow at the end closest to the pump. Since it's a closed system, I'm not concerned with anything getting in the milk, but it's probably time to replace them.