Netherweave Gloves

Netherweave Gloves is a part of the armor set, Netherweave Vestments which can be initially obtained from the Grand Master Tailoring trainer located in Hellfire Peninsula in Outland.

Source
Netherweave Gloves is a tailoring pattern for Tailors, purchased from one of the two Grand Master Tailors:
 * at Honor Hold
 * at Thrallmar