Longevity Bra

Hot yoga, a hike, your afternoon nap: this is our go-to medium-impact sports bra. Flattering and functional, the Longevity can be worn on its own as a long-line crop or under any workout gear. 

Classic Colours
LTD Edition
Questions & Answers

Longevity Bra Essentials

Why should this bra become part of your favorite fitness outfit?
Long-Line Cut
Get extra lift and support with a reinforced underbust.
Performance fabric moves moisture away from your body.
Eye-Catching Straps
Unique back detailing makes you stand out from the crowd.
"I have three of these bras and do laundry just so I can wear them again!"

– Monica G.

Read More Reviews

Build Your Set

Add this product into a bundle deal with underwear and accessories and get a great deal now!

How It Fits

Designed to fit soft and snug, with reinforced underbust for lift and support. There is some compression through the cups.


Materials (Beige, Black): 92% nylon, 8% spandex

Materials (Grey): 65% nylon, 28% polyester, 7% spandex


Machine wash cold with mild detergent, do not bleach, lay flat to dry

I can wear it all day and keep it on for my yoga class after work.
Kari F.

Tech To Take Your Life Back


We're done with uncomfortable underwear. With 4-way stretch fabrics, your Knix move and mold to your shape.


Each Knix product is tested by 1000s of real women to make sure it's ready for your real life.


Moisture-wicking. Anti-odor. Quick-dry. Because we know what it takes to conquer your day.

Our 30 Day Guarantee

Put your bra to the test. Wear it to work, to yoga, to the jungle - it’s your call. Give it a couple washes. Fall in love with it. And if you don't? We can help you get into a better fit or take it back, no questions asked.

Longevity Bra Reviews

Q & A


Q: Is there a way to sign up for a waiting list, or some kind of notification when XL is back in stock? Will they be back in stock?


A: Yes! You should have the option to sign up for a Back in Stock notification located under the product page.