Deuter Kid Comfort I is a small lightweight backpack preferred for urban use. The unique Aircomfort back system keeps your back from getting really sweaty and the Vari-Quick harness system makes it comfortable to carry and easy to adjust. Sweating on the trail is one thing but cmon -downtown in the city? Seriously though Deuter has pioneered the Aircomfort System a three-way ventilation system that significantly reduces body temperature and increases ventilation. The child harness is adjustable and padded for comfort and adjustability. A weather roof is included for inclement weather or really sunny days.