I believe this year's Rats cannot have a trunk. The new cadet handbook ( available on the website, but you will get one in the mail) specifies the allowed dimensions. Any other duffle bags etc need to fit inside that, once it's empty, to be put in the trunk room. Some folks pack items in plastic totes and have their families take those home once you throw everything into your wall locker. My cadet has several duffle bags that he puts in his trunk. Some items you will just have to carry loose, like pillows, comforter, fan etc.