In This game, the backpack has a mere 3 areas, however you can easily see what you want in it. The 1st Bag contains Items such as Potions
The Second Contains Key Items such as the Bike, TM Case, Berry Bag or Fossils
The third contains Pokéballs
The TM Case is situated in the Key Items Pack...with this you are able to fully see the statistics of the move without accessing the TM. Click Here for a Full TM/HM List
The Berry Bag Contains all the Berries that you can use. Click Here for a Full Berry List