At G cup, most mainstream activewear simply doesn't provide adequate support, and the difference between a sports bra that works and one that doesn't comes down to construction. Look for deep, separated cups, a very firm band, and straps wide enough to carry the weight comfortably through a full session.
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 G 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 G cup
Panache Sport and Elomi Energise lead at G cup, with the deep cups and firm bands the size needs. Shock Absorber covers high-impact wired support, and Anita Active is the wirefree option. Browse the full sports bra range across all cup sizes, or see G cup bras for everyday styles.
