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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
best running bra I'm a pretty small-chested 32B so I don't need major support from a sports bra, but I do need a bra that offers some compression and doesn't pull at my shoulders while I run. Even though the fabric on this bra isn't the latest-greatest running fabric technology, I find it to be the most comfortable running bra around. When I order my usual size 4, I get a bra that never slips or feels like it's going to ride up and leave my boobs hanging out, and also doesn't cut or strain at my shoulder area, which is key for long runs. I've tried on every other running bra lulu makes, and this is the only one that doesn't feel like an ordeal to slip on, or constrict like a strait-jacket once it's on. Please don't change the formula on these - they are amazing, and I'll be ordering more! July 3, 2015
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