I have discovered that vacuum sealing my PPW works even better than when I vacuum sealed my old Sony PRS700. I sealed it almost a month ago, when I took a long soak in the tub. I decided there was no reason to take it out, until it needs charging. The only problem I ever had, w/ any of my readers, was getting a snug seal, but not so tight that the buttons are depressed. It was impossible w/ the K2, but since the PPW only has one button, it's perfect!