DIBAG ® 12 Bags Pack Set-Vaccum storage space saving bags

The package comes with 1 jumbo, 2XXL, 2 XL, 2 L, and 5 suite case roll up bags. Has a turbo valve on the bag so any house hold Vaccum can suck out air 35% faster. Double zippered to ensure its watertight and keeps insets, odors and dirt out. I have tri d other bags like these before and was hoping these would be better. They weren't. To me they work the same way and have the same issues.  It took me several passes over the zipper to ensure it was sealed shut. Hooking up and vacuuming out the air was simple. A few days later, air had managed to get back into the bag. I will say I am a little excited to see how the suit case bags work on our next trip. My opinion is that they are the same kind you can buy in the store and have the same issues. I received this item free or at a discounted price in exchange for my honest opinion. http://www.amazon.com/gp/product/B00YT2ND72?psc=1&redirect=true&ref_=oh_aui_detailpage_o08_s00