A variety of forms and form components are provided, including form components for articles of footwear and athletic equipment. The articles include a composition having a form structure, wherein the composition includes a thermoplastic copolyester elastomer comprising: (a) a plurality of first segments, each first segment derived from a dihydroxy-terminated polydiol; (b) a plurality of second segments, each second segment derived from a diol; and (c) a plurality of third segments, each third segment derived from an aromatic dicarboxylic acid. Methods of making the compositions and forms are provided, as well as methods of making an article of footwear including at least one of the form components. In some aspects, the forms and form components can be made by extrusion or injection molding to form the polymeric composition, or extrusion or injection molding to form the polymeric composition followed by compression molding of the form.