A Few Breast Facts

1. Did you know, breasts are a complex system of glands, ducts, fibrous tissue, fat, and muscle? It's a system that changes as we grow, age, and vary our activity.

2. No matter the size of your breasts, well-designed and well-fitting breast support during high impact activity will improve your experience. You should never have breast pain during exercise!

3. While running, breast tissue moves in the shape of a figure eight. A great sports bra will support you from the bottom, sides, and top.

4. For more breast facts and information, please visit The University of Portsmouth Research Group in Breast Health

5 / 5

"Obsessed with this bra and can't stop talking about it to my friends. Have done a full marathon and multiple half's with it, phone in pocket the whole time without issue, often forget it's there."

Flyout Sports Bra in black, back view
Flyout Bra
Regular price
$78
Sale price
$78
Regular price
5 / 5

Running is tough when you have D-cups! Only the best bras even allow me to run without pain or movement. I've been buying the Queen Bra since Oiselle started making it - I couldn't run without it! They last for a long time, too. Love this bra!

Queen High Impact Adjustable Sports Bra in Black, back view
Queen Bra
Regular price
$92
Sale price
$92
Regular price
5 / 5

Not sure what else to say - the best running bra I've had in nearly 25 years of running! (...) Not too tight, not too stiff, but amazing support, and looks wonderful.

Hi Twenty Sports Bra in black, front view
Hi Twenty Bra
Regular price
$68
Sale price
$68
Regular price

Bras for Girls

A SPORTS BRA FOR EVERY GIRL. It’s our dream, and the mission behind Bras for Girls, founded by Oiselle in 2017, and now its own non-profit. Since its founding, Bras for Girls has donated more than 100,000 sports bras to girls’ athletic programs.

Machine wash, line dry icon

We design everything so that it’s ABLE to go in both your washer and dryer. The reality, however, is that knits and fibers and elastics, will ultimately deteriorate faster when exposed to high heats.

Wash in a garment bag icon

There are a lot of items in your regular wash that may damage parts of your sports bras, washing in a mesh bag keeps them protected.

Avoid fabric softeners icon

With performance fabrics, fabric softener clogs up the knitting, and prevents the fabrics from doing their job of wicking sweat and releasing heat.

Check its birthday icon

If your sports bra is in heavy rotation, it likely needs to be replaced after a year. Sports bras endure more frequent washings and more wear and tear when it comes to the materials, elastics, and trims.

How To Determine Your Bra Size

Follow our guide to determining your bust and bra size, making it easier to find the perfect sports bra to support your girls.

Anatomy of Support

In order to ensure comfort while running, the girls require a well-fit bra with thoughtful engineering. The chest band is the most important element of any sports bra, and should be the primary source of stability without being too constrictive. Next are the straps, they should be well-fitted without being too tight or stretchy. A number of Oiselle bras have adjustable straps that can help achieve the perfect fit.

And of course, every fabric and fastener and element should be soft, comfortable, and designed to prevent chafing. Is there something else you're looking for? We're always improving our designs and would love to hear your input. Please fill out our Design Feedback form.