"You can immediately tell the top is good quality and the fabric feels so refreshing. Im usually a size xxs but I noticed for EU / AUS brands they run a little smaller so I got a size XS and it fits perfectly! The top fits snug and the zipper stays where you leave while working out."














Serenity Active Zip Tank
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

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Overall rating: 4.75 / 5 from 204 reviews.
AI Generated Review Summary
The Serenity Active Zip Tank Black offers a soft and comfortable feel, with a high-quality fabric that is smooth and flattering. The design is appreciated for its flattering cut and comfortable material, though opinions on the zipper vary. The fit is often noted as perfect, but sizing up is recommended due to the small size.
Summary topics
- Product Quality (13%): It was reported by customers that the quality of the product is amazing, with many praising its fit and material.
- Fabric Quality (9%): It was reported by customers that the fabric of this top is really high-quality and feels comfortable.
- Design Appeal (5%): Customers expressed appreciation for the Nicest design, very nice cutting, and very comfortable material.
- Product Look (10%): Customers raved about the look of the product, mentioning that it looks beautiful and sophisticated.
- Product Feel (5%): Customers expressed satisfaction with the feel of the product, describing it as soft, comfortable, and refreshing.
Review topics: ["size","fit","feel","colour","length","look","quality","top","fabric","material","style","zip","design","cut","padding","tank","coverage","shape","support","piece","i\u2019m","crop","girls","snatches","slimming","workouts","csb","bra","medium","body"].
Review highlights
- "You can immediately tell the top is good quality and the fabric feels so refreshing." —
- "The fit is a bit tight , the material is great quality , mediym support level" —
- "I love everything about this top, the material, the fit is soo flattering, I go with my regular sz xs and it fits great!" —
Reviews
Love csb
"I love all of csb"
"Love everything about this top the design and fabric are both amazing. Would love to see it in more colors! I’d recommend sizing up."
Obsessed with this top!! Comfortable
"Obsessed with this top!! Comfortable fit, snatches you but isn’t too tight. Zipper stays up well. Love CSBs material. Pads inside are removable. I wear to workout or as leisure."
"Nice cut and quality but it’s super fitted and the zipper doesn’t stay in place."
Love love love this product,
"Love love love this product, super top, the quality of all the product, I love it so hard, also want it in more colors. The zipper works good"
The padding inside the tank
"The padding inside the tank is such a great design! The length of the tank makes your leg look longer."
Very cute and comfy.
"Very cute and comfy."
Run small
"This built-in bra tank is so pretty, but the sizing is way off. I sized up and it still feels way too compressed and tight."
This is been my favorite
"This is been my favorite purchase so far! The fit is so flattering. I feel like a Bond girl who attends Pilates. Lol I wish it came in more colors!"
























