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














for all orders over $150 (USD)
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
Please view full returns policy here.
FREE SHIPPING for all orders over $150 (USD)
Orders with a subtotal over $150 USD 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.
FREE RETURNS AVAILABLE
CSB offers free returns to Australia and International customers for store credit and exchange within 30 days of delivery for selected countries. First time customers will be eligible for a refund on their first purchase only which is subject to a return fee calculated at time of return. Please note, final sale items are not included in this policy and are unable to be returned.
Click here to see more information regarding returns.

Overall rating: 4.7700534 / 5 from 187 reviews.
The Serenity Active Zip Tank in Black is praised for its high-quality fabric, flattering fit, and versatile style. Customers appreciate its sturdy and comfortable zip, sophisticated look, and amazing quality. However, some find the size to be a bit snug.
Review topics: [size, fit, look, colour, length, quality, fabric, support, design, material, style, zip, shape, feel, cut, piece, coverage, padding, top, tank, i’m, girls, crop, snatches, slimming, body, csb, workouts, medium, bra].
"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."
"Too tight, fits like an XS."
"The fabric is so comfy and it’s so stable and also sexy"
"This top is everything I’ve been looking for! Great amount of coverage, good support, and gives a nice shape. Only issue is that the material is slightly too small around the armpits so I do need to pull the top down a fair bit as it rides up into my pits. I’m 5’8 for reference and got a small."
"Love the fit!"
"snug fabric, gives very nice shape"