Awesome bladder. I already have one of these so i know what i can say about it. Stays relatively flat even when full, awesome all the way around. OSPREY doesnt fool around!!!
Great quality on the slide top and all components. Nothing feels chinsey, even though the bag itself is kinda thin, the material is strong.
Recommend freezing with lemon juice and lemons in water 2/3 full before use though. Lots of plastic/rubber taste when you first get it. To be expected from all new water bladders.
Bite valve is excellent and the magnetic clip is my favorite feature.
Excellent option if you wanna scoop your water straight from a stream, with the slide top mouth and hard lips it is easy peasy. The fact that the tube splits with a quick connect, filtering is a breeze if you have a clip in filter. Filling this thing with a gravity system would be just as hassle free.