Sports Bra Best Fit Guide
Before purchasing the right sports bra, you would want to check the straps, the cups and the band. You might want to give the straps a small tug to see if they are not flexible at the front. At the back, the straps may be flexible but not the front as the front will hold the breasts firmly. When you adjust the straps, they should not easily slip off your shoulders. If you lift your shoulder straps then there should be only a one to two inch give. Adjusting the straps to your own body shape will give you the best fit.
Around 70% support from a sports bra comes from the under band so it’s really important that it fits correctly. You can check the fitting by putting the bra on and place a finger underneath the band and you should be able to pull it away from your body by one inch. Anything more than that, you should get a downsized one. Check that the under band is level all around your body. If its riding up your back then it’s definitely too loose and you need to go undersize in the band and upper size in the cup.
You also need to make sure that the bust is completely encapsulated into the cups. Ensure that there is no bulging at the sides or the front. If there is then the cup is too small. If the fabric is wrinkling or gaping, then this suggests that the cup is too big or the style may not be right for you. It should give you the feeling of fitting comfortably and securely. The encapsulation should not dig into the breast. The underwire should sit nice and flat against the rib cage.
Every woman is different and the body shape is different. The under band and the cup size you choose will be linked by something bra manufacturers call cross grading system. What this means is that if you find that you need to go down a size in the under band, you will need to go up a size in the cup. So, if you think that you are 34D for example, but find the under band too loose, then you should try on a 32DD bra size instead. Or if the under band of the 34D is too tight, you should try on a 36C.