change the size of the navigational thumbnails

-- url of the page with the problem -- : framemaker.dk/da/shop/product/3-baked-ag...-framemaker-template
-- HikaShop version -- : 4.4.2
-- Joomla version -- : 3.9.27
-- PHP version -- : 5.5.5-10.3.27-MariaDB-log
-- Browser(s) name and version -- : Firefox

Where do I change the size of the navigational thumbnails? Changing the size of thumbnails in the backend will change the size of the thumbnails on the front page where all the products are shown, but not these thumbnails. Can you please help me?
Best regards
Bjørn

Made it work. Thank you!