Leatherworking bags are a specific type of bag that can hold leather, skinning knives, and other leatherworking supplies. There are bags with 20, 24 and 28 slots. All of them are crafted by leatherworkers and are Bind on Equip. Leatherworking bags were first introduced in patch 2.3.

Types of bags and how to get them

[Leatherworker's Satchel] (20 Slot)

• Taught by master leatherworking trainers.
• Requires Leatherworking skill 300.
  • 20x  [Knothide Leather]
  • 4x  [Fel Scales]
  • 4x  [Fel Hide]
  • 3x  [Rune Thread]

[Bag of Many Hides] (24 Slot)

• Taught by [Pattern: Bag of Many Hides], a world drop.
• Requires Leatherworking skill 360.
• 15x  [Heavy Knothide Leather]
• 5x  [Wind Scales]
• 5x  [Fel Hide]
• 5x  [Nether Dragonscales]
• 5x  [Thick Clefthoof Leather]
• 3x  [Rune Thread]

[Trapper's Traveling Pack] (28 Slot)

• Requires revered reputation with Kalu'ak.
• Requires Leatherworking skill 415.
• 8x  [Heavy Borean Leather]

Can contain

• Hides / Leather / Scales
• Leatherworking Patterns
• Thread
• Dyes
• [Salt] / [Deeprock Salt] / [Refined Deeprock Salt]
• [Salt Shaker]
• [Skinning Knife] / [Finkle's Skinner] (Presumably [Zulian Slicer] as well)
• Armor Kits
• Drums
• Primals / Motes
• [Core of Earth]
• [Coarse Gorilla Hair]
• [Elemental Earth] / [Elemental Water]
• [Essence of Air] / [Essence of Earth] / [Essence of Fire] / [Essence of Water] / [Living Essence] (but not [Essence of Undeath])
• [Heart of Fire]
• [Iron Buckle]
• [Large Fang]
• [Long Tail Feather] / [Jet Black Feather] / [Light Feather] / [Ironfeather]
• [Flask of Mojo] / [Flask of Big Mojo])
• [Shadow Oil]
• [Spider's Silk] / [Thick Spider's Silk] (but not [Ironweb Spider Silk])
• [Wildvine]
• [Wicked Claw]