I have probably 20 pet carriers and some are bulky and some are light, the problem is that I could never find one that could completely conceal but was light. I looked all over pet stores and the internet and then I found this one
I take it every where and it has buttons that I can snap the top to it or I can take it off and there is mesh there where they can lool out or it can be unzipped so they can put there head out. Also the sides can be buttoned up or unbuttoned
I carrier two small chis in mine about 5 1/2 lbs altogether and they are quite comfy in it. It is kinda big but it is lighter weight than most and it has two straps, the shoulder strap is nice and padded
Here is the link.
The third one across that I have (Amberly Driftwood) and the second one down (Amberly Riviera) I plan getting next so I will have a different color in the same bag
) I am not sure if the other styles conceal the pets or not but these I know for sure do