Here's where she bought it from https://www.foss-sport.no/blunds/168592/oxyo-sport-varmeveksler-for-bruk-ved-aktivitet-i-kald-luft https://www.foss-sport.no/blu

Here's where she bought it from https://www.foss-sport.no/blunds/168592/oxyo-sport-varmeveksler-for-bruk-ved-aktivitet-i-kald-luft https://www.foss-sport.no/blunds/168592/oxyo-sport-varmeveks... Edit: and I've seen it in loads of various sport stores in Norway. But from all my searching I only find a few Norwegian results. Making me think it's either a Norwegian product, or rebranded by the importer. But reverse image search doesn't really yield any similar looking products either.