[In the comments section, By LatroVir on 02/08/2008 (Patch 2.3.3), at
]Simple Black Dress - Item - World of Warcraft
AFAIK, there are four robes that DO NOT bind on pickup/equip, have NO level requirement, and are item level 35+.
-Simple Black Dress crafted by Tailoring, roughly 2-5G in mats.
-Royal Dangui sold by vendors in UC, SWC, and Moonglade, ~29G.
-Green Wedding Hanbok limited supply sold by Geenia Sunshadow, somewhat rare, ~14G.
-Formal Dangui limited supply sold by Geenia Sunshadow, VERY rare, ~51G.
-Haliscan Jacket Added in patch 2.4.3, Tailor Pattern bought from Hauty Modiste in Tanaris.
This is useful to note because it allows you to apply one of the newer Burning Crusade enchants, such as Exceptional Stats, Exceptional Health, Resilience, Restore Mana Prime, etc., making them real powerful chestpieces.
They become so powerful that really, your best alternatives are to acquire the mats for +4 Stats and apply to superior chests in the 15-19 level range. But one important feature here would be lost... and that is the superiour chests would be soulbound, and therefore not reusable.
TLDR version: You get to make a resellable chest that's real good for leveling lowbies from 1-20+.