Bag

Bags are equippable items used to increase inventory space. A bag holds up to 5 items. A bag's capacity can be increased to 10 slots if a Rune of Holding is applied to it. A character may have up to two bags equipped at once.

You can unequip a bag by dragging and dropping it into an inventory slot, provided it is empty.

Bags, like backpacks or belt pouches, can be dyed, but will change nothing but the inventory picture. A bag's natural color is brown.

There are two unique bags, Charr Bag and Zehtuka's Pack, both of which already have 10 slots and cannot be further upgraded. They behave just like regular upgraded bags, but cannot be dyed.

Finds and Drops
Charr Bag (10 slots)
 * Pre-Searing Ascalon
 * The Northlands
 * drops from Charr bosses

Zehtuka's Pack (10 slots)
 * Nightfall
 * The Desolation
 * chance to find it on the ground

Merchants
Bags can be obtained from merchants at a price of 100 gold. All merchants in Factions, Nightfall, and Eye of the North carry them.
 * Prophecies
 * Post-Searing Ascalon
 * Arnaud (Ascalon City)
 * Warmaster Riga (Frontier Gate)
 * Northern Shiverpeaks
 * Hakon (Beacon's Perch)
 * Sanura (Yak's Bend)
 * Hadya (Borlis Pass)
 * Vera (Ice Tooth Cave)
 * Sebille (The Frost Gate)
 * Bodrus the Outfitter (Lion's Arch)

Collectors

 * Prophecies
 * Dael (Ascalon Foothills) - 3 Leathery Claws
 * Nazag Fenn (Dragon's Gullet) - 9 Gruesome Ribcages
 * Factions
 * Hao Zhang (Shing Jea Monastery) - 1 Oni Talon
 * Monastery Quartermaster (Shing Jea Monastery) - 1 Monastery Credit
 * Imperial Quartermaster (Kaineng Center) - 1 Imperial Commendation
 * Bae Kwon (Wajjun Bazaar) - 3 Vermin Hides
 * Kurzick Quartermaster (House zu Heltzer) - 1 Equipment Requisition
 * Luxon Quartermaster (Cavalon) - 1 Luxon Totem
 * Nightfall
 * Sunspear Quartermaster (Sunspear Great Hall) - 1 Battle Commendation
 * Sehyal (Sunspear Great Hall) - 3 Sentient Seeds
 * Danton (Jokanur Diggings) - 3 Skeleton Bones