Duffel bags are ideal for parkour and freerunning because they can carry all of the essentials without being too bulky or weighing you down. Duffel bags typically have a large main compartment and multiple smaller pockets, which is perfect for storing things like your change of clothes, snacks, water bottle, and first-aid kit. And because they're designed to be lightweight and durable, they won't slow you down or get in your way as you're running and jumping your way through your parkour or freerunning session.