Choosing a moisture-wicking material will also help to regulate the temperature of your body as you’re working out.
A low-impact bra doesn’t need to have as much support as a high-impact one. High-impact bras should be in an encapsulation style with molding, and definitely made of moisture-wicking material.
Wearing a compression-style bra is all right if you have an A or B cup size or are doing a low-impact workout, but an encapsulated bra is always best. [7] X Research source Encapsulated bras are especially important if you have a larger chest.
Straps shouldn’t dig into your shoulders — if you find the straps painful or making your neck sore, consider going with a different size.
Multiple panels provide greater all-around support. Look for soft seams around the cups. Generally, more fabric means more support. Racer back styles should be wide where they meet the strap to spread out the support in the back.
How often you buy a new sports bra will depend on how active you are. If you wear the same sports bra once a week, it could last up to a year, while if you wear the same sports bra 3 times a week, it’s going to be all stretched out after 4-6 months. If you exercise 4-5 days a week, you should have 4-5 sports bras that you rotate. Wearing the same one over and over again will cause the sports bra to stretch out much faster. [15] X Research source
If you’re using the tightest hook on your band, this may be a sign that your bra is stretched out and you should think about replacing it. Alternatively, it could mean you have a narrow back. You can also test the band by reaching your arms up over your head. If the band moves up your back, it isn’t a great fit.
If your straps are falling off of your shoulders and are adjustable, see if they can be tightened before deciding whether or not you need a new sports bra.