They have this all missed up...Here are some corrections. Yes, that is the picture of the burynai bracers, but the stats are right for the sleeves. The Thick Boned no longer drops it, At least on rallos. He drops the sleeves if he doesnt have the weapon (F/S War Hammer). Any thing can drop these but with the harder creatures you fight and the further down you go your chances are better with being rewarded with Burynai Hide Armor.
Kalah Ktulu < Mad Consortium >
Rallos' wandering Lizzy Monk.