The Epic Spray System is a more ecologically sensitive spray-paint system that uses disposable plastic paint bags and carbon dioxide as a propellant. The refillable container resembles a standard spray-paint can. However, Epic offers a number of innovations, including improved ergonomics, that make spray painting easier. Its translucent shell instantly relays the color inside and the amount of paint left. Inexpensive disposable bags hold the paint and are easily discarded or recycled. Changing paint color is simply a matter of inserting a new paint bag. Since the Epic system uses carbon dioxide as a propellant, it is safer to use indoors and with less ventilation than is normally required when spray painting.