The Best Sports Bras

Shape reveals its recommendations for the best sport bra in multiple categories.

Breasts can travel up to 8 inches when they bounce, according to a study at the University of Portsmouth in England. To help keep yours in place when you work out, Shape staffers of every size put a dozen new-for-spring bras to the test. Whether you're an A or your cups runneth over, here's the best support for you.

BEST SPORTS BRA FOR A/B, LOW-IMPACT EXERCISE...

Moving Comfort Dori ($44; seejanerun.com)
The cut, color, and "supercomfortable" support of this bra left gym-goers, walkers, and yogis equally satisfied. The adjustable strap in the back helped one tester "customize the fit."

BEST SPORTS BRA FOR A/B, HIGH-IMPACT EXERCISE...

Champion Shape T-back ($33; championcatalog.com)
Thanks to sizing by cup and band (like a regular bra), testers raved about this model's "perfect fit." "I didn't bounce at all when I ran," said one.And the light padding prevents show-through.

HONORABLE MENTION OF SPORTS BRAS FOR A/B...

Brooks Powerpro mesh ($38; brooksrunning.com)
Large-gauge mesh makes this bra particularly "lightweight and breathable," a bonus for longer workouts.

Two musts for larger cup sizes: more coverage and less stretch (a two-ply fabric is best for bounce control). Also choose a bra with two cups, which lift and separate breasts, over a bandeau style, which squashes them together (hello, uniboob!).

BEST SPORTS BRAS FOR C/D, LOW-IMPACT EXERCISE...

Under Armour HeatGear Strength 2 ($50; underarmour.com)
On cardio machines and around the weight room, testers loved this bra's "smooth," "weightless," and "nonrestrictive" feel. Plus, the racerback style is "cute enough to wear without a shirt."

BEST SPORTS BRA FOR C/D, HIGH-IMPACT EXERCISE...

Champion Double Dry seamless full-support underwire ($40; championcatalog.com)
Two separate underwire cups and adjustable straps made this style the favorite of our D-cup testers. One said: "I didn't feel my breasts move at all, even when I was running up stairs."