It shall not consider light weight compare to annex kit or annex case. Even it could expand to 7L but I doubt you will rarely use it. When the folding part is fully expend and occupy (full 7L), the weight balancing and centre of gravity is just awkward. It makes it unpleasant to carry. It might not suitable to direct use it as a pouch or wallet like annex kit or annex case design for. I like the colour especially when you can choose to fold down( yellow) and fold up ( green). It makes you feel like you own 2 bags. The x (cross) strap shall be orientate 2 ways ( when fasten - X(cross) , and loosen - I I(parallel)) instead of keep adjusting the strap. I prefer to secure the item outside the bag instead of keeping inside. The space is quite limited when you choose not to expand the bag, so that it still looks good overall. When you secure a water bottle or an umbrella ouside the bag. You actually get 2 inner compartment instead of 1 inner compartment if you keep the bottle in the expendable compartment. You can face up ( yellow) to keep the dry items, and face down (green) to store the wet items like rain coat or wet umbralla. Overall, consistent COB quality control, world class fabric from indonesia. No complaint , this is a interesting sling for me, more fashion than function. It wouldn't be your only sling but could be your less boring sling bag. Lol