Very good buy it!Overall I like them very much. However I'm using them to store sofa cushions in a hot attic so we will see.Sealing effect: I tried it when I received it today. The sealing effect is very good. Size: The bag looks small, but it can actually hold a lot of clothes. The large one I used to hold a super thick quilt of about 6 kg. In short, the exhausting experience with a large capacity: you can first press the excess air out with your hand and then use the vacuum cleaner to extract the air. Product quality: I have been buying products made in Kyoto recently. The quality of the paper half sleeves is super good. I like it very much. , I saw this storage bag by chance and it looked good. I was not disappointed when I received the goods. The quality of the bag is super good and the style looks good. Thickness: The quality of this storage bag is not bad. Applicable scenarios: Generally, I use it to hold thick winter clothes such as down jackets and sweaters to keep warm, and there are thick quilts. The quality is really good and praised! A pleasant shopping experience haha, goodI had to move a house worth of belongings unexpectedly within a few days to storage and these bags were perfect. I tried other brands too, but this one worked the best for the price and unbeatable quality. I recommend them highly.I am so glad I ordered these. I have used other brands before, but either the zippers broke or they leaked. These seem to be well made and don't leak at all.I wanted these to work sooo bad. Even after reading the reviews I still purchased these for moving. They worked at first ( it says give it 24 hours and revacuum if it doesn’t work we’ll I did 4 times ). It never stays airtight for long one ripped but the others didn’t. Before anyone thinks oh maybe she didn’t close the plastic part ( you have to pull it up to vacuum seal ) I closed it and even tried putting tape over it so the air wouldn’t leak out.They are a bit better than the other types of bags. I love that they are squared bottoms makes it much easier to add the clothes.They don't seal properly.