The vinyl skirt for the PBP Hoth Stormtrooper has large holes and does not zip. This is because it does not have the typical cross hatch pattern found on most typical Kenner capes.
I have attached a photo of a double page spread from the Javier Ruilopez Made in Spain book which features a pic of the cape and also a description of the cape, referencing the lack of cross hatch pattern. It does not mention that it does not zip but if you collect Spanish PBP figures it is a well known fact that it should not zip.
The PBP figure while not rare, is harder to come by than the normal Kenner variant, and is therefore worth more money.