http://www.eqtraders.com is >>the<< site for EQ Trade Skills... IMNSHO.
Formula is appropriate pattern, oak bark tannin, excellent sabertooth tiger hide, imbued emerald and 2 mithril boning, tailored in a Fier'dal sewing kit.
Requires smithing AND tailoring done by a WOODELF tailor. Also requires an imbued emerald and lots of morning dew. Tailoring trivial is undetermined but well in excess of 122 where imbued mithril studded trivials at.
You can wear these - or you can TRY to make the insanely difficult Velious tailoring. Half-Elves get NO Cultural trade skills. Personally, I think they should have gotten the skills of the race where they grew up (e.g. if they started in Kelethin, they get the Wood-Elf racial stuff, if they started in Freeport or Qeynos, they get the Human racial stuff).