Some reviews say that these wings will fit 75t: https://www.amazon.com/gp/product/B00O681HJA/
I ordered them and will receive on Friday, so didn't try yet, after testing I can leave a comment about how they work.
It is really frustrating that Jabra doesn't provide default ear wings/hooks, because for me the seal is not good enough. I tried Comply foam, Misodiko, Spinfit tips. Comply tips just detach from earbud, Misodiko are pretty good, but they get bloated in water pretty fast and dry very slowly, Spinfit are the best so far, but still not enough to hold the earbuds for long time. Occasionally earbuds still fall out.
Now using Jaybird Vista, they have similar size case, similar size earbuds, but less battery and multipoint. But they hold in ears much better.