The Acender 22 Bag from Kelty is versatile enough to handle just about all of your travel needs. The Ascender expands from 40L to 70L giving you nearly double the volume when you need to travel a little heavier and don't mind checking your bag. When having your bag checked, take advantage of the removable chasis that allows the Ascender to function more like a rolling bag in order to save your shoulders and back. Carrying on? Simply leave the chasis at home and stow your bag in the overhead compartment.