The main difference is the volume. The Backpack Pro has removable hip and chest straps unlike The Backpack, adapting from heavy-duty to loyal daily mates.
In addition, here are some of the main features of each bag.
The Ramverk 21L (The Backpack):
- Hook-up compatible
- Nylon Fleece top pocket
- Fully openable main compartment
- Inside mesh pockets
- Compatible with The CIA
- Separate laptop pocket - fits a 15” MacBook Pro & the new MacBook Pro 16"
- EVA front and back panel
- Db Patented Rib Cage Technology
The Backpack Pro:
- Db Hook-up compatible
- Nylon Fleece Top pocket
- Side straps
- Mesh bottle pocket
- Fully openable main compartment
- Inside mesh pockets
- Detachable chest strap and hip belt
- Compatible with both The CIA and The CIA Pro
- Separate laptop pocket - fits a 15” MacBook Pro (2018 model or later)
- Db Patented Rib Cage Technology
- EVA front and back panel