These bags only hold items related to Inscription supplies, but are larger than the average general bag.
“Pack of Endless PocketsItem Level 75Disenchants into: Not disenchantableBinds when equipped32...Pack of Endless Pockets
“Inscription Bags are a special type of bag that hold items created by scribes. Types of Bags and...Inscription bag
“The Scribe's Satchel is an inscription bag that will only hold items needed for inscription...Scribe's Satchel