Aircontact Lite: Vari Quick | backpack, video recording | Deuter Aircontact Lite series has adjustable harness at the back to adjust the torso size from 15 to 20 inches. We call it
Deuter Kid Comfort Series
Fitting the Kid Comfort 1, 2, & 3 Carrier
Deuter Aircontact Lite 40+10 Hiking Backpack Hiking Rucksack Black | eBay