I bought this set as well as the bagail mesh compression set. After a heck of a time trying to pack my carry on suitcase (mind you I think that my carry on is only a 20 inch), I decided to use these for all my regular clothes and one of the mesh ones for my bathing suits. In the mesh 2nd to smallest bag, I packed 4 bathing suits and 2 coverups. I just felt that the non-mesh ones compressed down a little farther, maybe because there aren't any holes to let air seep in..I'm not sure. But I switched all my regular clothes to these ones and it worked a whole lot better. I was able to fit 4 shirts, 2 wraps, 2 skirts, 1 summer dress, and 1 romper in the medium size. Then all my other clothes went into the next size up, but not the XL one. In here I was able to fit 1 UV shirt, 2 sleep shirts, 1 pair of leggings, 3 more beach wraps, 2 kaftans, and 4 nice club/evening dresses!! By using these I was able to have room in my suitcase for 2 beach hats, 1 additional beach dress, 1 pair of shorts, 1 pair of heels, 2 pairs of sandals, 1 pair of flip flops, goggles, makeup case, resusable shopping bag, inflatable travel pillow, water shoes a waterproof bag, phone case, and Bluetooth speaker!! (Most of these items are not visible in the photos and are underneath the bags. The struggle was very real. Of course, you can't really see all three bags in the picture when packed so I took the top one off to the side so you could see that I used 2 of the non-mesh bags, and 1 mesh bag. I don't know how I would have packed without these and I didn't even open the expansion on the suitcase. Hopefully I don't get mandatorily checked. Don't mind the item on the side pocket of the luggage, that is just my drink carrier that I will use while roaming around the airport.