If you don't have a lot of space to work with, whether you're furnishing a dorm, kid's room, or small apartment, you may need a twin or twin XL mattress ... you score a new bed for under $400 ...

The only issue? Their new twin bed might not be as comfortable as the one they’re used to. But with one of the best Twin XL mattress toppers, which should fit most college dorm bed sizes ...