How to choose a sport bra?

Photo taken from decathlon sg 

For a start, to look for better support the band around the bottom of the bra should be wide rather than narrow. Next, it should sit against the chest wall underneath the breasts and be a snug fit which will not slide up if you raise arms. If you have large breasts, you should look for wider straps so that the straps would provide better distribution of weight. At the same time, the straps should not stretch too much so as to reduce the up-down movement of the breasts.  The material of the sports bra should be able to wick away moisture from your skin. In order to prevent the chafing around the arm-holes, shoulders, and below the breast, select seamless material, cover those seams or those rolled with edges. Most importantly is to ensure that your whole breast should sit inside the bra and is held against the chest.