I have used them too, and they are really good, but as solar companies says, they can leak, and for some unknown reason mine have, I think the valve became loose. I did not pay a lot for them so I think if you get better quality bags then the valves might last a bit longer. The clothes inside, stayed fresh and not creased either. I would recommend them, I put all our holiday clothes in them, the ones that we only really take when going away. They do stay clean fresh and are easy to store. Worth a go. Good for big woolly jumpers too.