Scubapro Resort Bag

You want only one bag, but you need two:  the Twin Bag is for you:

• Converts from one to two seperate bags
  Twin compartments for wet/dry gear plus two side pockets
• Total capacity: 84 liters
  Main: 34cm H x 26cm W x 71cm L.
  Side: 34cm H x 9cm W x 71cm L.
• Shoulder strap and padded handles