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Flow Y Bra IV

Our signature four-way stretch fabric is sweat-wicking and cottony soft - we love this high-performance fabric for its serious stretch and recovery
Lightweight, stretchy and moisture-wicking, this fabric holds you in and breathes at the same time, making it perfect for all kinds of sweaty business.

Getting a bra with the right support is important. If you don't love the fit, send it back - returns are on us.

why we made this

Simplicity is a beautiful thing. We made this racerback bra because we wanted a timeless classic that works under any tank, for every activity. A sweat-wicking liner and Mesh fabric in strategic places let us blow off steam when we're bringing the heat.

fabric + features

  • cottony-soft Luon® fabric is engineered for serious stretch and recovery
  • this technical fabric is sweat-wicking and four-way stretch
  • added LYCRA® fibre moves with you and holds its shape
  • lightweight Mesh panels are placed in high-sweat areas for added breathability
  • thin straps allow you to move and twist with ease
  • chafe-resistant elastic band under the bust provides support where you need it
  • designed with pockets for removable cups
  • imported

fit + function

  • designed for: yoga
  • fabric(s):
  • support: light
  • coverage: low
one moment please
one moment please
$42.00 USD
view size chart

Flow Y Bra IV 4 5 759 761
Careful of the Electric Coral color! I love these bras, but beware: the Electric Coral color bleeds on white. I wore this in karate class, under my gi (karate uniform) and got quite sweaty Monday night. The color bled onto my white gi, and I had to use stain remover to get it out. The stain is out now, so everything's fine, but I won't risk wearing it again. I absolutely love the crazy color, but I'm returning the bra. July 2, 2015
Good, basic sports bra I saw the WMTM price and bought it. I had eyed this in the store. I normally wear a 8 for running/4way stretch or if it's a tight fit...a 10. This ran small in the 10 when I tried it on in the store and since this is a yoga bra, I was pretty sure the 12 would be best. So, 36C...yup it's fine...mind you...like I mentioned...I wouldn't run in this bra...it's definitely a low key activity bra. Love the mauve. One thing I could care less about...it has built in inserts (cover nipples???). Hoping those don't cause problems later. June 28, 2015
Perfect for a hot summer I love this bra! The mesh in the back provides some breeze and the bra is lightweight, you almost forget you are wearing it! I'm a 34D to 36C, so I DO NOT run in this bra. I wear it day to day and for barre. It is comfortable, cute, and easy to wear. I wear it under plenty of my professional clothes! June 27, 2015
Great for yoga and running errands I love this bra for yoga and as a basic every day bra to wear under my lulu racerback tanks. I am 5'4 125 pounds 32 DD and wear a 6. In the all sport adjustable and energy bras I am a four, however in this bra I need a six to get the proper coverage. This bra definitely is not supportive enough to run in, but I absolutely love it for everything else. Just bought a black and white patterned one in my local store that I don't see online. Can't wait to wear it! June 20, 2015
new sizing is disappointing I have worn this bra for many years. I went to purchase my same size 4 as I have worn for years and the bra is a completely different fit/size now. (And I now see other reviewers are saying the same thing.) It's now much shorter and compact using less fabric in total. And it is a bit tighter all around as well. I am so sad. One of the things I liked about this bra was that it had good coverage for the chest and I could by one of Lulu's tanks that are more low cut and have the bra peak up higher than the tank creating an interesting layered look. Now I feel there is just too much chest showing. Why mess with a good thing? I won't be buying any more. June 10, 2015
Sizing Problems I bought this about 6 months ago, removed the tag, felt that it was too too snug, and decided never to wear it again. I tried it again recently (quite hopeful) that maybe it would fit me this time. I usually range from a size 2-4 in lululemon clothes. I bought this bra in size 6. And even then, it is extremely snug, and makes respiration difficult. I am a huge fan of lululemon clothes, but this one really threw me off! June 8, 2015
Flow Y Bra IV This is the one and only Lululemon bra I ever buy. I love how it fits and is very comfortable. I have it in at least 8 different colors. However, I have noticed that lately they are fitting snugger. I have bought a size 8 for about 7 years, but lately the straps dig into my shoulders and cause a lot of redness, so I have started buying a size 10. Luckily for me, this hasn't changed how supportive this bra is. June 6, 2015
perfect simple bra I love this bra. I use it for everything, from martial arts, running, yoga, cycling. I'm 117 lbs, 5'3", 34B and size 4 fits perfectly. The only complaint is that I wish they come in brighter colors for summer. June 4, 2015
Perfect This is my personal perfect sports bra. I have many different colors. Comfortable, enough support (B cup), and pretty colors. They launder well and the pads are easy to remove and put back in place. June 4, 2015