Rucksacks for adrenaline sports tend to be lower capacity with close fitting chest harness rather than conventional hipbelt. 'Vest' packs are those designed to fit like a vest - they are very stable when running.
Rucksacks for adrenaline sports tend to be lower capacity with close fitting chest harness rather than conventional hipbelt. 'Vest' packs are those designed to fit like a vest - they are very stable when running. Bike packs are also designed to be very stable, they have reflective parts and features such as helmet carrying capability.