While there is no official "portable" edition by name, the book is available in several digital and condensed formats that serve the same purpose: Pearson eText/eBook

The "portable" aspect addresses the logistical burden of legal education. A student carrying a laptop or tablet possesses a library of casebooks and statutes without the physical weight. For commuting students or those engaged in distance learning, the PDF ensures that the resource is available 24/7, assuming an electronic device is present.