Better value than the 3-pack in my opinion! These bags are larger overall - I assumed the smaller three would be the same as the 3-pack I also purchased but these are overall a better scale. The largest one is the same size as the interior of my carry on hard side roller bag and the other three make great components. Easy to zip, as long as you aren’t over filling the bags. These are most effective when not already stuffed before compression - fill about 75% capacity and zip to compress, and you will fit more in your suitcase. It took some experimenting to figure out the best capacity but I ultimately was able to use these to fit all my clothes for a 3 week trip combining work office visits and beach vacation into a carry on bag!