After the first test and review of the Flexible Link concept, the system and its ergonomics were further optimised. Two complete function and design prototypes were constructed for additional tests and for marketing purposes.
[>] Ergonomic optimisation
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In order to better understand the system and its effects on the body, we worked with physical therapists to produce and evaluate video analyses.
The video images help to clearly show the wearer’s movements and posture, demonstrating the effects of the load bearing system on the athlete’s course of motion:
- Rotational movement between hip and shoulder
- Lateral movement of the upper body
- Comparison of posture
The requirements for the further development of the system were defined on the basis of this analysis, and in continued collaboration with the physical therapist.
Along with the development of the new exo-frame, designs were devised for different areas of application.

The compact Bike Backpack has a generous helmet holder. Other practical details include the generous access to the main compartment and reservoir and a rear compartment that is accessible even while riding.


The Fitness Pack has a central zipper through which the athlete has quick access to the capacious inner compartment and the reservoir. Two mesh pockets on the outside, stick holders and the practical rear pocket complete this elegant backpack.

The innovative backpack system presents a great challenge to the production partners and the entire production chain. That’s why we specifically sought flexible and experienced partners who were able to come with us on the challenging new road presented by this development.


Flink chose to work with a Taiwanese supplier for the injection-die
moulded components. This company brings with it many years of
experience in producing and supplying plastic components for the sports
industry and knows the high demands on the quality of these components.
A family-owned company, it distinguishes itself through its
uncomplicated communication and impeccable working conditions.


For the fabrication of the textile elements, the decision went to a Taiwanese company with a production site in southern China. This company brings with it many years of experience in the production of sports-related articles and especially backpacks. This candidate made the cut thanks to its exemplary implementation of the design drafts.