Who It Suits
Leather is the armor type Demon Hunter, Druid, Monk and Rogue wear. With Agility or Intellect, Tunic of Second Sight suits Assassination, Outlaw and Subtlety Rogue; Brewmaster, Mistweaver and Windwalker Monk; Balance, Feral, Guardian and Restoration Druid; Havoc, Vengeance and Devourer Demon Hunter.
Similar Items
The 10 items nearest to Tunic of Second Sight (item level 13) in item level among Armor > Leather, Chest slot, from item level 10 to 16.
Rigid Tunic has the highest item level here (16).
Next item levels up from Tunic of Second Sight among Armor > Leather, Chest slot: Wolffear Harness (item level 21), Archer's Jerkin (item level 21), Headhunter's Armor (item level 21), Battle Harness (item level 21) and Spirewind Fetter (item level 22).
Nearest lower item levels below Tunic of Second Sight among Armor > Leather, Chest slot: Battered Leather Harness (item level 5), Handstitched Leather Vest (item level 4), Replica Wildheart Vest (item level 1), Novice's Robe (item level 1) and Thug Vest (item level 1).
Transmog Sets
Tunic of Second Sight is part of the transmog set Vestment of Second Sight (Demon Hunter only), which the Appearances collection lists in 4 versions. The other 16 pieces:
Built from the World of Warcraft client build files and recorded Auction House snapshots.