In June 2019 Vladimír Dušánek the CEO of Kästle CZ & COO of Kästle AT was interviewed by a Czech online business magazine
https://www.peak.cz/vladimir-dusane...astle-ve-sportenu-uvazujeme-i-o-kolech/16880/ if you scroll down to the second paragraph below a photo of him holding a grey Sporten ski it contains the word “Roxa”.
A machine translation app and a bit of editing gave this:
What is the cooperation with binding manufacturers?
We work with all major binding manufacturers except Salomon and Look. We also cooperate intensively with boot manufacturers, both Nordic and alpine. We are thinking about building our own brand of boots that someone else would manufacture for us. This is especially important for Nordic, where 90 percent of the time we sell complete Nordic ski sets, i.e. skis, bindings, boots.
And what about alpine?
In alpine skiing, only about a third of sales are for complete sets. Nevertheless, we have started an intensive cooperation in this area with the Italian brand Roxa, which we liked for its history, which is similar to ours. Like us, they were making boots for different manufacturers under their brands and then they decided to make boots under their own brand. Today, they are one of the most technically advanced and innovative companies, using Grilamid or at least PU+ (a high-end material used for boot shells) even in lower models.