A mi entender, en este caso la horma del calzado es rígida y de menor flexibilidad que en el caso “slip-lasted”, ya que aquí se incluye una placa rígida interior (sturdy insole board), de fibra u otros materiales, aunque el fabricante asegura en este caso concreto confort y apoyo (¡cómo no! :-).

La ventaja de este tipo de horma es su mayor estabilidad, aunque también hace el calzado algo más pesado que el de horma flexible. En realidad, la construcción “board-lasted” proporciona más rigidez, son diseños más rígidos.

Desconozco si puede servir para México, tendrán que confirmarlo o desmentirlo los colegas mexicanos. Nivel de confianza me dio.

Suerte.



http://www.slowtwitch.com/Products/Running_Footwear_by_brand...
The term "last" [= horma] can be confusing, because it can also refer to how the upper is attached to the midsole. You'll hear three terms used: slip-lasted; board-lasted; and combination-lasted.
A slip-lasted shoe is made by sewing the upper into a shape that resembles a moccasin. This construct is then glued directly to the midsole without any board in between. These are flexible shoes with lots of cushioning and, on balance, little motion control.
Board lasted shoes have a sturdy insole fiberboard running the entire length of the foot bed. This type of construction provides the greatest stability. But shoes of this construction are rare nowadays because of weight, and lack of flexibility.

http://www.obozfootwear.com/site/faq.html
What is the difference between a Strobel Lasting and Board Lasting?
-Strobel Lasting v. Board Lasting: They are both methods of construction - and refer to the "board" that forms the base of the upper of the shoe. In strobel construction, the board is softer and stitched to the upper. In board lasting construction, the board is firmer and is cemented to the upper. Board lasting is common in heavier and/or stiffer shoes and boot. Strobel construction is common in lighter, more "athletic" shoes, i.e. running shoes.



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Note added at 1 hr (2013-01-14 20:06:06 GMT)
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Estos son los diversos tipos de horma en inglés:

http://www.aapsm.org/runshoe-running-anatomy.html
Last construction: This refers to the manner in which the upper is attached to the midsole. The significance of last construction is that the type of last influences the stiffness and flexibility of the shoe.
BOARD LASTED: Board lasted shoes have a firm board that provides a rigid platform for the foot. Boards are often made of plastic or cardboard. Board lasted shoes are the most stable but are less common in today’s running shoes.
Slip Lasted: Slip lasted shoes simply wrap the fabric from the upper under the foot without using any type of board. You can recognize a slip lasted shoe by removing the insole and looking for a seam down the middle of the footbed. Slip lasted shoes are the most flexible.
Combination Lasted: Board lasted in the rearfoot and slip lasted in the forefoot. Combination lasted shoes allow for more control of the rearfoot but without limiting flexibility of the forefoot.
Strobel Lasted: Strobel lasted shoes are the most common type in today’s running shoes. A thin sheet of material such as EVA is glued to the midsole then the upper is stitched to the material. You can recognize a strobel lasted shoe by the stitching around the perimeter of the footbed. Strobel lasted shoes are less flexible than slip lasted yet not as rigid or heavy as board lasted shoes.


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Note added at 14 hrs (2013-01-15 08:50:28 GMT)
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Con respecto al término "last" (horma):
The term "last" [= horma] can be confusing, because it can also refer to how the upper is attached to the midsole. You'll hear three terms used: slip-lasted; board-lasted; and combination-lasted..

En español ha ocurrido algo parecido, por influencia del inglés la "horma" ha pasado a designar también la estructura del calzado en la unión de suela intermedia (la que no está en contacto con el suelo) y la parte superior.