These bags only hold items obtained in the mining profession, but are larger than the average world drop or craftable bag. Only 1 mining bag may fill a slot in a bank at any time.
“ Mining bags are special bags first made available in World of Warcraft: The Burning Crusade...Mining bag
“ Mining SackItem Level 60Disenchants into: Not disenchantableBinds when equipped20 Slot...Mining Sack
“This item is created with Leatherworking (500): [Pattern: Triple-Reinforced Mining Bag]. Patch...Triple-Reinforced Mining Bag
“ Reinforced Mining BagItem Level 65Disenchants into: Not disenchantableBinds when equipped28...Reinforced Mining Bag
“ Mammoth Mining BagItem Level 75Disenchants into: Not disenchantableBinds when equipped32 Slot...Mammoth Mining Bag