How to Measure & Choose the Best Sports Bra Size for Women

Wearing the wrong size sports bra is the #1 cause of pain, breast bounce, or skin chafing during your workout. The good news: Fitme allows you to look up your size by height and weight via the “Find Size” button; for better accuracy, measure your bust as well. The band is what determines the fit when you try it on. Below is how to measure, a reference size chart, and what to do if you’re between two sizes.

Use the “Find Size” button to choose the right fit

Fitme recommends bra sizes based on height, weight, and bust. How to use the “Find Size” button on the product page:

• Required: Enter your height (cm) and weight (kg).
• Optional (for better accuracy): Measure your bust (at the fullest part, with the tape parallel to the floor, without pulling too tight) and enter it in the third box.

The tool automatically cross-references the model's size chart and returns the best-fitting size. After receiving your order, remember to check the fit: the band determines the support, so it should be snug (the 2-finger test).

Reference size chart

The table below shows Fitme's standard bra sizes, based on height, weight, and bust. This is for reference only: each model has its own specific size chart via the “Find Size” button on its product page, so always check against the specific model before ordering.

Size	Height	Weight	Bust
S	1m45–1m68	40–47 kg	< 83 cm
M	1m50–1m70	47–55 kg	< 86 cm
L	1m55–1m72	55–62 kg	< 91 cm
XL	1m55–1m74	62–68 kg	< 96 cm
2XL	1m60–1m76	68–75 kg	< 100 cm

Understanding band and cup for the perfect fit

For sports bras, the “band” determines support and tightness, while the “cup” determines the fit around the breasts. A properly fitting bra means the band is snug around your body (2-finger test), and the cups fully contain your breasts without spillage or fabric wrinkling. Being off on either one will cause discomfort.

Between two sizes — how to choose?

• High-intensity training (running, HIIT): choose the smaller size for a secure fit that minimizes bounce.
• Prefer comfort (yoga, everyday wear): choose the larger size for better airflow.
• Fuller bust: prioritize your bust measurement, as long as there is no spillage from the cups.

5 signs you're wearing the wrong size bra

• Band slides up when you raise your arms → the band is too loose.
• Red marks on your shoulders or back → straps or band are too tight.
• Spillage / cleavage bulge → cups are too small.
• Fabric wrinkles on the cups → cups are too big.
• Excessive bouncing while jumping → the bra is too loose overall or the wrong impact level.

Size selection checklist

• Enter your height + weight into the “Find Size” button (measure your bust for more accuracy).
• Band passes the 2-finger test and doesn't slide up when you raise your arms.
• Cups fully contain your breasts, no spillage or wrinkles.
• Do the 10-jump test: no pain, no excessive bounce.
• If between sizes → choose based on your main activity (go smaller for high impact).

Measure right once, wear it right all year. Every Fitme Sports Bra has its own size chart at the “Find Size” button on its product page. Read more: Choosing a bra by workout intensity and How often should you replace your bra?.

Frequently Asked Questions

What measurements are needed for a sports bra?

Mainly your height, weight, and bust to enter into the “Find Size” button; the band determines the fit, so check that it passes the 2-finger test and doesn't slide up when you raise your arms once you receive it.

Which size should I choose if I'm between two?

If you perform high-intensity activities like running or HIIT, choose the smaller size for a secure fit to reduce bounce; if you prioritize comfort for yoga or daily wear, choose the larger size for better airflow.

How do I know if my sports bra is the wrong size?

Signs include: the band sliding up when you move, red marks on your shoulders or back, breast spillage, wrinkled fabric in the cups, and excessive bouncing while jumping.

Why does my sports bra cause spillage or leave marks?

Spillage is caused by cups being too small; red marks on shoulders or back are caused by a band or straps that are too tight — you need to size up or choose a model with a better-fitting band.

Is the underbust or bust measurement more important for sports bras?

The underbust determines the fit and support (accounting for about 70% of the support), while the bust measurement is used for the size chart — you need both; use the bust to find your size, then verify the fit with the 2-finger test.