Sustainable activewear for larger bust

Hellooo everyone!

I’m currently trying to find a good activewear setup and would really appreciate some advice from people who maybe have some recommendations.

I’m looking for something that ideally uses more natural / low-tox materials (organic cotton, TENCEL, etc.) or at least cleaner fabrics without PFAS or heavy chemical finishes. I know that limits options a lot, especially for higher support sports bras.

In terms of training, I mainly do resistance/strength training, with some occasional HIIT classes, so I need at least medium support, ideally something that can handle a bit of movement but doesn’t necessarily need to be extreme high-impact all the time.

I’ve also found that I really don’t get on well with traditional structured bras (wired or very “cup-shaped” sports bras) — they feel bulky and uncomfortable for me. I prefer more of an activewear set / crop-top style bra that feels smoother and less restrictive.

For reference, my measurements/size:

Underbust: 80 cm Bust: 92 cm

I usually wear UK 12DD / EU approx 85B depending on brand (fits comfortably in some everyday bras)

I’ve looked at brands like Seela, MATE the Label, Tripulse, Organic Basics, etc., but I’m struggling to find something that balances:

cleaner materials

enough support for workouts

and a non-bulky, comfortable fit for a fuller bust

If anyone has recommendations for brands or specific pieces that might work, especially in the EU or that ship to Europe, I’d really appreciate it!

Thanks so much in advance 😊