The 3 Impact Levels of Sports Bras

TEAM KNIX / SEP 23, 2020

Shopping for a good sports bra can be really stressful, especially for people with larger breasts! 

If finding the right look and fit isn’t challenging enough, how is anyone supposed to know what all these impact levels mean? And which one is right for your movement needs? Join us on a crash course about sports bra impact levels, so when you’re shopping for your next one, you’ll know exactly what you need.

Sports bra basics

When it comes to sports, there are three main impact levels, which refer to the effect the sport or activity may have on the body. In the case of running shoes, for example, when they refer to “impact”, they’re talking about the pressure on weight-bearing joints like your knees and hips.

 

But in the case of sports bras, we’re talking about the effect the activity may have on your breasts. The higher the impact level, the greater degree of breast movement, and the greater the need for support.

An example of a high-impact sports bra: The Catalyst Front Zip 

You should always wear a supportive sports bra when exercising, no matter what your breast size is. Even if you wear a 34A if you don’t wear a sports bra when working out, you run the risk of damaging and stretching the breast ligaments, which could result in long-term issues like back problems and shoulder pain. 

Read on to learn more about the three impact levels, what they mean, and which sports, activities or movements you’ll need each of them for.

Low-impact sports bras

Low-impact sports bras are designed for sports and activities with a very low degree of bouncing. With light, comfortable support, low-impact bras are a great option for those with smaller breasts, or for more gentle activities.

Are low-impact sports bras for me?

Low-impact sports bras are ideal for people with cup sizes A through D. If your breasts are larger, it may be best to move up an impact level. But many people of all cup sizes like to wear low-impact bras as lounge or sleepwear. The rule of thumb here: whatever works for your body!

What do I wear them for?

Many people like to wear low-impact sports bras for lounging around the house, when out for a walk, or to a gentle yoga or pilates class. If your breasts are on the smaller side, you may find them supportive enough for hiking or cycling.

What do we recommend?

Check out our Wireless Bra CollectionThe Evolution Bra and LuxeLift Pullover Bra are both super comfortable and supportive for low-impact activities. 

Medium-impact sports bras

Medium-impact sports bras are designed with an extra level of support for people of all cup sizes. Typically, these bras come with a slight degree of compression and fit snug to the body for additional lift and support.

Are medium-impact sports bras for me?

Medium-impact sports bras are great for people of all cup sizes. Depending on your breast size and the degree of support you require, medium-impact bras may be your preference for either low-impact or high-impact activities as well.

What do I wear them for?

These bras can be worn for activities such as yoga, golf, hiking, cycling, or using the elliptical. People with larger breasts may find them more comfortable and supportive for walking or everyday wear as well!

The Longevity Bra is perfect for medium-impact activities.

What do you recommend?

The Longevity Bra. It's flattering and functional, and can be worn under work-out gear or on it's own.

High-impact sports bras

High-impact sports bras are designed for activities that involve a lot of jumping or movement that may result in breasts bouncing. They are usually made with a high degree of compression and are built with a lot more support in the straps and bottom band.

Are high-impact sports bras for me?

Because of the additional support, high-impact sports bras are ideal for people with larger cup sizes. That being said, people of all breast sizes can benefit from the support they provide—especially if they're in for a heavy workout! 

 

What do I wear them for?

 

High-impact bras provide the most support for activities that involve a lot of bouncing and breast movement. These bras should be worn for sports like running, dancing, kickboxing, and horseback riding. We also recommend them for all dance parties. 

What do you recommend? 

If you're looking for a high-impact sports bra, The Catalyst is for you. The molded cups separate and encapsulate your breasts to reduce movement, and is made to mold to your shape. The Catalyst also comes in a front closure version! The Catalyst Front Zip is a great option if you have mobility issues or a limited range of motion. It's also super easy to take on and off (no matter how sweaty you get). 

 The Catalyst Front Zip and the Original Catalyst 

Not sure where to start? Take a look at our best sports bras to find the right one for you and your lifestyle.

Shop the story
Catalyst Front Zip Sports Bra
High Support
$89 USD
Rated 4.8 out of 5
62 Reviews
Evolution Bra
Medium Support
$55 USD
Rated 4.3 out of 5
3811 Reviews
LuxeLift Pullover Bra
Medium Support
$50 USD
Rated 4.6 out of 5
914 Reviews
Longevity Bra
Low Support
$50 USD
Rated 4.3 out of 5
1085 Reviews
Catalyst Sports Bra
High Support
$89 USD
Rated 4.7 out of 5
2114 Reviews
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Shop the story
Catalyst Front Zip Sports Bra
High Support
$89 USD
Rated 4.8 out of 5
62 Reviews
Evolution Bra
Medium Support
$55 USD
Rated 4.3 out of 5
3811 Reviews
LuxeLift Pullover Bra
Medium Support
$50 USD
Rated 4.6 out of 5
914 Reviews
Longevity Bra
Low Support
$50 USD
Rated 4.3 out of 5
1085 Reviews
Catalyst Sports Bra
High Support
$89 USD
Rated 4.7 out of 5
2114 Reviews
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