I’m very short so these bags were about the size of my entire body but they were very easy to use. I just filled them up with my clothes and since I’m short I just laid on top of the bag while I zipped it up to get some of the air out initially (if you have a child or another small person you could make them do this as well lol). I read another review saying how difficult it was to zip these up but I did not have this problem, just firmly press the white clasp on the zipper while you zip it shut and you should have no problems. Just ensure it is sealed with your hands before vacuuming. I just used a standard vacuum with the nozzle attachment and it didn’t really fit on the circle opening on the bag but I just put my hand over the portion that the vacuum nozzle did not cover and then quickly screwed the lid on tightly after vacuuming and that’s it. Very convenient for moving as well as storing off season clothes or blankets.