The industry-first innovative FlexLiner material bag technology makes fast work of indoor and outdoor painting, staining, and cleaning projects. It's simple to use - just fill with paint or disinfectant, squeeze out the air, and spray. There are limitless possibilities as the FlexLiner bag system allows for spraying in any direction, even upside down. Just reuse or toss the FlexLiner bag when done. Disposable liners virtually eliminate clean up. Use with stain, latex, and oil-based paints and primers. See owners manual for disinfectant information and requirements. Includes 3 liners.