After finding an unknown Austrian (or other) brand and nice Dutch shorts, I make this list (work in progress). Any help is appreciated. Maybe I’ll make separate tags or lists (Adidas are too much, maybe for Adidas Junior or rare models or color). I have to find more close-up scenes. Most or all companies making shorts for both sports and swimwear. Not sure about other sports like boxing. Pic from Kinderen voor Kinderen 4.
Brand – Country of origin – Country worn – Movie examples
Adidas – Germany – worldwide – Manni, der Libero, Pfiff, many others
Arena – Germany – worldwide – none found, yet
Lotto – Italy – NL – De bal is rond
Olan – Argentina – Argentina- Cebollitas (also other brands including Adidas)
Puma – Germany – Germany – Manni, der Libero, others
Rucanor – NL -NL – Kinderen voor Kinderen 4
Umbro – UK/USA – Argentina – Cebollitas
Unknown – Australia – Australia – The Adventures of Skippy
Unknown – Austria ? – Austria – Der Tag, an dem Anton den Widerlan fand
Unknown – Argentina? Argentina – Cebollitas
Update: I could identify another brand OLAN worn in Cebollitas. They wore some other brands including Adidas and one yet unknown with a diamond Logo and pattern. Maybe I will make a list about Cebollitas. One minute later, I found the brand with the diamond, that they mainly wore in Cebollitas: Umbro. Thanks to Erik for pointing out the Rucanor shorts!