Abstract: An embodiment can include a pectus carinatum device for providing an adjustable compressive force to a subject's sternal protrusion. A pectus carinatum device can extend around a subject's torso, and chest cavity and apply a dynamic compressive pressure directly to a subject's sternal protrusion. A pectus carinatum device can include a strap removably attached to a clasp, a cinching device, a compression plate, and a protective padding. A cinching device and compression plate can apply a dynamic compressive force to a subject's sternal protrusion. A strap applies tension around a subject's torso, but allows the subject to freely move, and breath while keeping a constant dynamic compressive force on a subject's sternal protrusion. A protective padding can be removably attached to a compression plate, and an enclosure can be configured to surround a strap and to receive anti-migration, and antimicrobial material.