#MAYFAIRWORLD: 437's Adrien Bettio & Hyla NayeriJuly 2021 Hyla Nayeri and Adrien Bettio are the co-founders of multi-million dollar swimwear label, 437, and today, Sam and Mayfair’s Creative Director Kaylee join them to dive into the inception of the business and the gap they sought to fill in swimwear. Share on Facebook Opens in a new window. Tweet on Twitter Opens in a new window. Pin on Pinterest Opens in a new window. Back to blog