This is the perfect day pack for the field. I'm a Marine (reviewing from my wife's account) and this bag is basically perfect for me. After my previous personal bag fell apart I was looking for a replacement that was more compact that didn't look huge on me as well as fell within uniform regulations and this bag fits the bill perfectly. It holds plenty of supplies without looking big. On one field op I fit 3 days of food water and supplies, including my sleeping gear. I tend to load up bags fairly heavy and the hip strap comes in handy. The material and construction are very rugged. My bag was even ran over by a car and the only thing wrong was the hip buckle broke on one side which I was able to order a replacement from hazard 4 for only about $3. I've had this bag for just over a year and the only thing wearing out are the sleeves on the zipper pulls with are just cosmetic and we're easily reinforced with tape. This is an amazing bag and would highly recommend it.