FF cup is where the choice of sports bra narrows to the brands that actually engineer for a fuller bust. Full encapsulation is essential — each cup independently supported — along with a firm band and wide, cushioned straps that spread the load across the shoulders rather than digging in.
Matching the bra to the activity
High-impact styles — running, HIIT and jump-based training — use rigid encapsulated cups and a firm band; medium-impact styles suit the gym, cycling and reformer; wirefree and low-impact styles work for yoga, walking and rest days. At FF cup the band does most of the work, so it should feel firm — if the straps are taking the load, the band is too loose.
Brands that work at FF cup
Panache Sport and Elomi Energise both come in FF cup. Shock Absorber and Anita Active add further wirefree options at this size. Browse the full sports bra range across all cup sizes, or see FF cup bras for everyday styles.