

“You not only need support underneath your breasts, but around the sides and in between,” says Joanna Griffiths, founder of the brand Knix. They actually move in a sort of figure-eight, often bumping into each other. Many brands now design based on the understanding that your boobs don't just bounce up and down when you jog, jump, or twist. They're not the only ones thinking differently, either.

"But during high-impact movement, the fabrics start to stick and react like a seatbelt.” “When moving slowly, like in yoga, the fabric moves with you in every direction," says Ebersberger.

In fact, Reebok started their own sports bra revolution by rethinking fabric with their PureMove bra, which features a fluid fabric complete with motion-sense technology that was created by University of Delaware researchers. Take a sneak peek at the best high impact sports bras: “It’s always the same principle: The idea that, in order to create a higher-support sports bra, you need to create more layers, with additional bindings and additional hardware.” “It’s interesting, because if you think about the bra and history of the bra, for a long time, there hadn’t been any real innovation in the way companies constructed them,” says Barbara Ebersberger, Reebok’s vice president of performance apparel. From creative construction and technology that cuts back on bounce to designs that keeps you comfy (no more too-tight-to-move constriction!), they’ve found some seriously innovative ways to make it happen. Throughout the last few years, big brands like Reebok, Brooks, and Lululemon, as well as smaller labels like Knix and Maaree, have dedicated themselves to making even better high-impact sports bras a top priority. Sports bras have certainly come a long way since Lisa Lindahl invented the first one back in 1977 by fashioning together two jock straps.
