Plain and simple this is an amazing bag. It's incredibly durable and seems to be very well made. To those of you complaining about the size? That's on you for not understanding what 15l or 935 c.i. looks like, but to those of you who are looking for a bag for movement and speed this is the bag for you.The bag is rather narrow on the inside. It will not hold a laptop, but it it does hold my iPad air perfectly in the back against the water bladder compartment (it will not fit in the compartment). Furthermore, when completely packed it more or less qualifies as a "personal bag" in addition to a carry on on every flight I've been on (even though the dimensions may be larger than what is measured as a personal item on most airlines websites it fits EASILY beneath the seat in front of you.For those of you thinking this is a great bug out bag? It is not. It is too small. However, it's an excellent dayhike, Every Day Carry bag, or a great Get Home Bag that you keep packed and in your car if you need to go a short distance. This is a great bag for someone who wants to move quickly and unencumbered.One negative, but not negative enough to remove a star, is that you can really load this bad boy up with weight, but with the lack of hip belt the weight rests heavily on your shoulders which can get somewhat tiring.