Abstract: A shape supporting and form maintaining device, known as a “HatNoodle”, for a cap. The cap includes two components, an essentially hemispherical crown component and an attached visor component. The aforementioned “HatNoodle” device is constructed from a resilient material and includes a bottom surface and an essentially convex top surface. The bottom surface may contain a plurality of holes that extend into, but not completely through, the material of the device and are used when installing the device into a cap. The top surface of the device contains a plurality of slots wherein each slot begins at the center of the top surface of the device and proceeds outward in a radial direction. The slots facilitate installing a cap onto the device. These slots also allow the device to better conform to the shape of the inside surface of the crown of the cap hat it resides within.