The present disclosure relates generally to disposable articles, and, more particularly, to a disposable undergarment including a product chassis configured to serve as a basis of a variety of disposable articles, including, but not limited to, disposable underwear without an absorbent core, disposable underwear with an absorbent core designed for menstrual use, and disposable underwear or training pant with an absorbent core designed for incontinence use (adult and child). The product chassis is comprised of multiple sections including an elastomeric composite, containing stretch film, coupled to one another, each section is designed to provide stretch in a desired direction, thereby resulting in improved securement of the undergarment to a wearer for optimizing fit and comfort for the wearer, while reducing the risk of leakage as well as reducing the amount overall material required for producing the undergarment. Furthermore, the inclusion of an elastomeric composite can provide a smooth contoured fit to a wearer, thereby improving appearance and self-confidence for the wearer.