Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Blast-Proof Cowl Compares
Who It Suits
Mail is the armor type Evoker, Hunter and Shaman wear. With Agility or Intellect, Blast-Proof Cowl suits Beast Mastery, Marksmanship and Survival Hunter; Elemental, Enhancement and Restoration Shaman; Devastation, Preservation and Augmentation Evoker.
Transmog Sets
Blast-Proof Cowl is part of the transmog set Windspeaker's Regalia (Shaman only), which the Appearances collection lists in 3 versions. The other 16 pieces:
Blizzard numbers items as they are created, so the named items next to ID 113891 (113886 to 113896) were usually added in the same batch as Blast-Proof Cowl: the same quest line, zone, vendor or reward set.