A good sports bra is like an old friend—holds you close, offers comfort when you need it, and gives unconditional support. Which are the best? To find out, we gave 20 testers of different sizes—from a 32A to a 40DD and a 34FF—the newest styles to test-drive in yoga class, at boot camp, and while running. Their top picks are shown here. Take their word for it, or try this dressing-room test: Jump up and down, swing your arms, and touch your toes. Pass on any that dig, pinch, or rub.
Best for:
Medium To High Impact (A-B cups)

Support Sport
$48; lucy.com
Available in: XS-XL
Features: Modesty Padding, Moisture Wicking
Simple weight loss tips.
Best for:
Medium Impact (A-C cups)

Shape T-Back
$36; championusa.com
Available in: 32A-38D
Features: Maintains Shape, Modesty Padding, Moisture Wicking
Best for:
High Impact (C-D+ cups)

B5044 Run
$79; shockabsorberusa.com
Available in: 30A-38F
Features: Maintains shape, Adjustable band, Adjustable straps, Moisture wicking
Tired of your saggy parts? Firm your trouble zones with this workout.
Best for:
High Impact (B-D cups)

VersatX Support
$65; cw-x.com
Available in: 32B/C-36D
Features: Adjustable band, Adjustable straps, Moisture wicking
Best for:
Medium To Low Impact (A-B cups)

Henna
$39; isisforwomen.com
Available in: S-L
Features: Moisture wicking
Lose more weight: Turn your walk into a run.
Best for:
Medium To High Impact (C-D cups)

Luna
$52; movingcomfort.com
Available in: 32B-38DD
Features: Maintains shape, Adjustable band, Adjustable straps, Modesty padding, Moisture wicking
Best for:
Medium To Low Impact (D-D+ cups)

Endure
$45; underarmour.com
Available in: XS-XXL
Features: Maintains shape, Modesty padding, Moisture wicking