I've used this lid as a day pack while skiing, hiking, snowmachining and edc scenarios. It's build with 500d Cordura and big YKK zippers makes it nearly indestructible (I had some pretty good whipeouts while skiing with this lid as a daypack on my back and it shows no wear). The shoulder straps are comfortable and well placed. The dual compartments hold my tall nalgenes, spotting scope and tripod securely. This lid makes a great addition to any backpacking pack or is great as a simple stand alone daypack. 10/10.