Nasal dilators like Turbine and Breathe Right

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What’s your opinions of / experiences with nasal dilators (also known as nasal stents) like Breathe Right strips and Rhinomed’s Turbine?

Seems to me they should work and it’s hard to ignore when Chris Froome and Kristin Armstrong are using them to win TdF Yellow and Olympic gold.

But without turning to the manufacturer statements, does anyone have their own stories or seen independent research that supports them working?