Abstract: A paint bladder including a bladder that has an exterior surface and a top portion with a cylindrical extent. The extent has an external portion with a notch and an internal portion with a valve lip that is connected by a hinge. A cap capable of slidable engagement of the external portion of the cylindrical extent for closure. Included is a hollow inner core that is accessible through the cylindrical extent, and for air containment. A rigid tube is positioned within the cylindrical extent. The tube has a first end opening that is sealed by the valve lip and a second end opening. Lastly, the tube operates as an air valve when the second end opening receives an amount of air therethrough and into the hollow for expansion of the bladder when the cap is removed.