solid but not comfortabel

This shoe looks rock solid. I have tested it only inside the apartment, but as a prosthetist-master I'd say I see it.
But the shoe has its drawbacks and for me they were reason enough for a return:

First of all you should know as a buyer that this shoe the natural ankle almost decommissions (quasi the precursor of a downhill ski boot). Normal can run as nobody, but such footwear replace that with a role. This is simply put one type ink wiper curvature of the outsole in the ball area and above you can then roll.
The result is a somewhat unnatural running with comparatively high stress on the knee joints, but with excellent ankle stabilization. (This shoe nobody can ankle sprain, because the quasi motionless.)
In addition, here the outer material is also relatively stiff, so me personally the shoe pressed uncomfortably on top of the big toe metacarpophalangeal joint (but you have to try, which can also be easily with other feet).

I have been wearing Addidas trekking boot in a fabric and leather combination. They were much more flexible and could be in "go normal", ie move the metatarsophalangeal joints and ankle almost normal. Unfortunately, such a combination is often not really waterproof.
Conclusion: The panacea is now unfortunately not.
Anyone can thus connected accustomed gait and rolling to the relatively compact, rigid form and who gets here safely lasting and probably largely waterproof shoe. But those who prefer natural running and rolling, which is not happy here.