Custom Apparel & Uniforms | Signature Concepts, Inc. branded merchandise, promotional merchandise, corporate merchandise, branded merch, company branded merchandise, promotional merchandise companies, private label merchandise, top branded mercha For more than 30 years Signature Concepts has been a trusted partner in the Twin Cities for custom apparel, uniforms and promotional products. Our in-house screen printing, embroidery, heat transfers, sublimation and twill applique capabilities provide clients a level of convenience and savings that is unmatched.