The Polar Night Wheeled Backpack with Daypack from Timberland is a great travel system for men or women.  With a large 32l capacity, and many clever features, you shouldn’t go anywhere without it!  For long trips away you can pack everything you need and have both bags zipped together and transported by the sturdy wheeled trolley.  During the day, simply unzip the daypack from the main bag you can take just what you need for the day.