Siberian Bronze age armor made of bone

I thought "bone armor" was the fabrication of sword-and-sorcery stories, but in this case it is real:

Archeologists are intrigued by the discovery of the complete set of well-preserved bone armour which is seen as having belonged to an 'elite' warrior. The armour was in 'perfect condition' - and in its era was 'more precious than life', say experts.

It was buried separate from its owner and no other examples of such battle dress have been found around Omsk. Analysis is expected to determine its exact age but Siberian archeologists say it dates from 3,900 to 3,500 years ago...

Currently the experts say they do not know which creature's bones were used in making the armour. Found at a depth of 1.5 metres at a site of a sanatorium where there are now plans to build a five star hotel, the armour is now undergoing cleaning and restoration...

He is certain that the armour belonged to a 'hero', an 'elite warrior who knew special methods of battle' and would have 'given good protection from weapons that were used at the time - bone and stone arrowheads, bronze knives, spears tipped with bronze, and bronze axes'. 

Detailed photos at the link.