H Style Bra clip - Thicker, rounded shape
Not really a remix other than I was inspired by the OP's shape of it. Mine is a remake inspired by the general shape and size, but 4mm thick and with fillets to round over all edges, for comfort and strength.
I felt like the thin original seemed like disposable packaging or something, rather than something deliberate, to keep.
Thanks OP, I was asked for this by my other half on holiday, and she said yours is exactly what was needed. Mine's just thicker and rounded.
EDIT: I've added another design based on feedback that the straps can come out of the clip if they come loose. From the photos, the grey background white clip render is Bra_clip_V2.stl