I used a medium sized Ebags classic packing cube.
My PUP already had the typical purse contents. In the main compartment, I added a packed Ebags medium cube and my iPad. The cube contained - 1 bra, 2 pairs of undies, 1 pair of medium weight work pants, 3 rolled thicker weight cotton t-shirts. There was still spare room in the cube. I then folded over the outer edge of the cube on one side to get it to fit in my PUP bag. (Small cubes may be better.). After getting the cube situated - there was still room to add 2 pairs of folded up socks into the bag. The PUP bag was not stuffed to the max. (I should have tried a quart size 3-1-1 ziplock bag. I bet I could get it in with little finagling. I use flimsy ziplocks rather than a rigid 311 bag. I carry minimal liquids.). The outer zip pocket where I keep napkins and tissues could be a good space for a flat style 311 bag.
My PUP bag weighed 9.25 lb.s with the above contents.
The PUP can be carried by hand, over arm, or over shoulder with the attached nylon straps. For long corridors - I recommend paying extra for the claw rubber shoulder strap. Alternatively, there is a trolley strap and the bag can just ride on top of your suitcase.