The Track Jack Board Case is a super flexible and friendly travel companion. With three different carry modes (backpack, side carry and over the shoulder), you'll be ready for any occasion. We even added a fold out reflective stripe for when you head out for a bike ride at night. Stow away your 17" Laptop with ease and still have space for all your clothes and travel mementos. Need more space? The extension pleat will increase storage space if you return with more stuff after a spontaneous shopping trip.