From what I can gather, both the enlisted/NCO and officer versions are molded fiberglass. The enlisted/NCO is all fiberglass with a simple leather chinstrap. The Officer version, which is exactly the same as those used by the cadets at the army academy, "Jose Maria Cordoba", are made of both fiberglass and leather with very heavy lacquer coating applied to it. The front visor and rear skirt have leather on the underside. Also, it is equipped with a leather chinstrap with brass chinscales.---Overall quality of the officer version parts are quite good but not fitted to perfection once assembled.
Other than for use at the academy, army pickelhaubes are used mainly for presidential guards and officer's within the presidential guard.
The Colombian National Police officers use pickelahubes of the same quality and finish as the army officers for parade/ceremony.
The original Colombian pickelhaubes of old were of course made in Germany with wrap around front plates. The quality of course was excellent. I have seen these in the army museum in Bogota and have some photos which I can post later.
There are many military outfitter stores in downtown Bogota on 9th Street and 9th Avenue. Many things are for sale for military personnel only. One needs special permission to purchase anything Military or Police. However, if you happen to be a tourist and not local, you may be able to purchase something since the shop owners feel you will not be staying anyway.--just be aware it is highly illegal in Colombia to purchase and own any of these items.
Due to US involvement and support with training the Colombian military, the vast majority of the webbing and equipment is US surplus. The insignia is either made in Germany or the U.S. by N.S. Meyer of New York. Once again, thanks to the US the economy in Colombia has greatly improved and Colombian insignia companies have been popping up. This could be the reason for the decline in quality with insignia and picklehaube parts.
Colombian uniforms army, police, etc. are made locally by the Colombian government, Example, "Batallon de Intendencia Las Juanas" for the army.