The most flattering top
"Sucks you in without being uncomfortable. So flattering on the shoulders and neckline. 10/10."














for all orders over $150 AUD
within 30 days (exclusions apply)
Meet the cropped Active Zip Tank: your new functional and sporty go-to style. Pair with our active 4" shorts for the ultimate '00s throwback.
- Low support
- Removable padding
- Functional zip up front
- Made in our Serenity fabric
80% Polyester, 20% Elastane
SHIPPING
Orders with a subtotal over $150 AUD will be provided with a free shipping option in checkout. Please know that the cost of shipping is calculated at checkout and based on delivery location and weight.
Parcels being sent outside of Australia may be subject to customs, duties and taxes. Please read more regarding this here.
RETURNS
At CSB, we want you to love your pieces! If something isn’t quite right, you’re welcome to return your order within 30 days of delivery, provided it meets our Return Eligibility Requirements.
Read more on the Returns Policy here

Overall rating: 4.7582417 / 5 from 182 reviews.
The Serenity Active Zip Tank in Black is praised for its flattering design, high-quality fabric, and perfect fit. Customers appreciate its functionality and versatility, though opinions on the zipper vary. The material is noted for its quality, slimming feel, and breathability.
Review topics: ["size","fit","length","colour","look","quality","material","support","fabric","design","feel","piece","cut","style","shape","zip","coverage","padding","top","tank","girls","i\u2019m","crop","snatches","csb","medium","workouts","bra","slimming","body"].
"Sucks you in without being uncomfortable. So flattering on the shoulders and neckline. 10/10."
"I originally ordered a size S (my usual size) but when it arrived it was a bit too snug. A size medium was perfect for me and I love the thick material and how warm it keeps me while still allowing for movement. Absolutely love how flattering this top is."
"Sized up which was necessary for an overall good fit. The neck piece is sticking out in the back unfortunately, became way too large. Zip and quality feels good, I’m glad a sports bra underneath is not necessary due to the padding"
"I love that it snatches the body so well, but the zip has a default on my product. Sometimes the zip will just split in two, so I’m really scared to wear it outside of my house."
"Runs small and it's really compressive. Had to size up."
"snug fabric, gives very nice shape"
"I love this top! Initially bought it trying out tops for a running race, and after a few brands and styles decided to use this top for Miami Half Marathon. It was comfy, flattering, and everything I was looking for. I feel my best when I put this top on, so PLEASEEEE CSB - make it in every color."
"Love the colour, design and quality! Would recommend for pilates, I always get compliments. Very form fitting but fits snug!"
"Incredible! The built in cups means you don’t have to wear a sports bra under. Synched in at the waist to create shape. Wish it came in more colours."
"I love the dawn crop and glad to see a tank version of a zip crop. This zip crop runs true to size, I ordered a small as a 32C it fits great. Small is my usual size in CSB. Hopefully CSB can drop a zip shirt in the next launch, like this zip but with short sleeves *fingers crossed*"