I am going to Maui in a couple of days and I have been wanting a Maxpedition versipack for some time and the KISS is in my price range and is nice and simple with the water bottle pouch. I am not used to carrying a bag or "man purse" but I am trying to make an excuse to get one and this seems like a good excuse to get one since I am going to be packing for almost two weeks. What I am thinking about putting in the bag is my camelbak water bottle, my shaving kit with MP3 player charging kit, toothpaste and deodorant, and other such toiletries and accessories and when traveling I will put boarding cards and other such things in it, and if they are going to search the bag with all the electronics and liquids I would rather them look at the smaller Maxpedition bag than tear apart my larger 40L bag.