Portable toilet with 5 Gallon /20 L holding tank, which is comfortable, convenient and environment-friendly, Has an innovative product design and robust ABS quality (good dimensional stability) with shiny surface. This high-quality toilet offers powerful flushing with less pumping as well as splash-free operation and discharge. What's more, it is easy to use push-button operation. This portable toilet is a great unit for anyone who despises using public port-o-potties or camps where there's no public facility. It is great for camping, outdoor recreational activities and road trips, as well as those who are elderly to move or patients. Instruction: Open the fresh water holding tank, fill the tank with fresh water just below the neck mouth and then tighten the cap up Pull out slide valve before use Depress bellows pump one or more times