There are two varieties of Space Bag. One requires a vacuum and is meant for home use, the other one rolls up to squeeze the air out and is meant for travel. You want this kind:
Just curious if these wrinkle your clothes? I use ebags (which I LOVE), but, boy, if I could cut down on luggage (without wrinkling our clothing!) with these, that would be awesome!
I used to us these in my carry on, would put tissue paper between blouses and had no issues with wrinkles. But when I started traveling longer and with bigger luggage I stopped beacause if I used them in a 24 or 26 inch bag it would always be over 50lbs (overweight for airlines).