Recommendations for black loop/band for the Ultra?

Hi together,

I am looking for a simple band for my Ultra, which I can wear for workouts, on holidays, does not take ages to dry but still looks decent/elegant when wearing a shirt e.g.

I was thinking of a black, synthetic band like the braided black loop. But the official one officially does not support the Ultra. Officially.

I’d prefer one pure in black or a Color matching the Creme tone of the ultra. No fancy/large laces or ornaments.

Can your recommend any?