As with all bras it's important to know your size. Many women are wearing large cup bras with too big a band size which means their boobs aren't supported. Wearing too big a band size is 10 times worse when buying a sports bra because your band supplies over 80% of the support to your boobs. Finding your size at home is easier than you think. Check out this step by step guide to finding your size.
1) Stand side on to a mirror and wrap a tape measure around your ribcage underneath your breasts (the tape measure should be flat against your skin but not pulled tight). Make sure the tape is horizontal to the floor at the back and round the front. Read the measurement in inches. If it is an even number write that down, if it's an odd number round up to the next even number. THIS IS YOUR BAND NUMBER.
2) Wrap the tape measure around the fullest part of your bust (over the nipples) ensuring it is horizontal with the ground at the back and front. Write down this number (to the nearest whole inch).
3) Deduct your first measurement from the second one (you will get a number between 1 and 15). Compare this number to the charts below.
It's not ideal that manufacturers in different parts of the world use different letters to denote cup sizes. However, if you know your cup letter (as explained in step 3) then you can find your cup size for each manufacturer. Lots of boutiques offer a size chart based on manufacturer to make it easier for you.
4) Most women don't realize that they have more than one bra size. For example, if your measurements result in you being a 34G then in some bra styles and brands you will fit a 36F. This calculation is very easy: If you try on a bra that is bigger in the band than your basic size (in this case 34G) then you need to come down a cup size.
When trying on a large cup sports bra you want to ensure that the straps are secure but not cutting into your shoulders. The wider the straps the better because the impact from your workout is dispersed over a bigger area and this prevents pain and red shoulder dents. Your cups and the central panel between your cups should lie flat against your body. The cups should enclose most or all of your breasts.
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