am very convinced of this "bag". Property me this 6-pack purchases and 3 of them are working properly and keep what they promise but unfortunately are 2 more after the "Vacuuming" again been shorter time later soft and one had completely given up the ghost. As I said it is a great thing but if 50% do not work properly is very annoying.
Update:. A super service. Shortly after I wrote this review, I was contacted and I was spare sent! So service and must be grateful for the new "bag"!