Cannot find Wood Harness reference

In the The Dark Eye Aventuria Compendium, page 215 has a break down of the stats and equipment for the Dajin-Buskur template.

Its equipment section makes a mention of a Wood Harness as the first item. Now the only wooden item in the Armor section of Aventuria Compendium is Wooden Armor on page 230.

The Aventuria Armory book has no reference to either Wooden Armor or Wood Harness.

So, is there a book that talks about difference in materials being used to create the armors or is this just not reference yet?