If you are not too worried about fines for your luggage being over-weight limit, I would suggest space bags. I use them all the time. I try to put my clothes that would wrinkle less in them. For example, fluffy thick sweaters, sweatshirts, warm socks, etc... I get the ones at walmart, kmart that have a one way air purge valve. It purges the air out, as you roll them up. Hope this helps.