The Lowepro Pro Trekker AW is what you might call a "full sized" camera backpack. If you have a large system and you want to take it all with you, this backpack will hold it (probably). It has thick straps and a waist support to give your shoulders the best chance possible of making it through the day. Please note that the AW "raincoat" is not present on this bag. Interior dimensions are approximately 18x32x45cm.