This Hayward Pool Vac XL is made specifically for vinyl lined pools. The Pool Vac XL moves silently through your pool with a predetermined route. This cleaner uses Hayward's AquaPilot programmed steering, cleaning all pools in under 4 hours. No booster pump required - this cleaner is powered by your existing filtration system - avoid the extra expense of a separate pump designated for your cleaner! Quiet, attractive and efficient, the Pool Vac Ultra will provide years of satisfying performance.