Rolling feature and size.  We are able to put in an entire days of laundry and we live in Sugar Land , Texas  where the humity is overwhelming so there is quite a lot of laundry and we have just moved into a new home and are up at 6 and work until 8 at night so that makes for a lot of laundry.  We use the second basket for dry cleaners and I am 76 and able to lift canvas bag easily. Very happy with both items  being on rollers is a bonus as well.