So many air pumps … how to choose? There are two important factors to consider – pressure and effort. Pressure – each pump has a maximum PSI rating which is how you know whether the pump is powerful enough for your inflatable kayak or SUP. Effort – Standing up and using our foot pumps is pretty easy, compared to the full body action required for the hand pumps. But the easiest option is of course the electric air pumps. They are powerful and reliable – once you electric, you never go back!