I am a small-medium framed female (5'4" and 125 pounds) and was suprised to see how well the backpack fits, thanks to all the adjustment straps. Very solid and even after loading it up with gear (tent, etc), the weight distribution made it unnoticeable even on long (8+ hours a day)treks. I took it camping to the west highlands and into Cape Wrath, and I fell in love with it. I was able to fit: tent, matt, sleeping bag, bag with clothes + pair of shoes, food (dry/dehydrated), water (side pockets), and bag of smaller items (the top pocket), all packed in dry bags. Two not so brilliant points (but not essential, this is not why I bought it): no little straps to hang on to while walking (never know what to do with my hands) and I am not convinced the back air flow system thing actually does anything. I bought the S/M size, gray (it still looks shiny clean!).