for all orders over $150 (USD)
within 30 days (exclusions apply)
A limited-edition collection designed in collaboration with Isabelle Mathers.
Movement-approved and consciously designed, our 4” Serenity Shorts are everything you’ve been searching for.
- Scrunch-bum detail
- No front seam
- High-waist
- Hidden pocket in the waistband
- 4” inseam length
- Internal exclusive CSB x IM logo
- Made in our Serenity fabric
80% Polyester, 20% Elastane
FREE SHIPPING ON ORDERS OVER $150 USD
Enjoy free standard shipping on all orders with a merchandise subtotal of $150 USD or more. Eligible orders will automatically receive a free shipping option at checkout.
Shipping costs for orders below this threshold are calculated at checkout based on your delivery location and parcel weight.
Duties and taxes are prepaid where available. If included, your selected shipping method will display "Duties & Taxes Prepaid" at checkout.
If this label is not shown, any applicable duties, taxes, or import fees will be payable by the recipient upon delivery.
30-DAY RETURNS
We want you to love your CSB pieces. If something isn't quite right, you can return eligible items within 30 days of delivery for a refund, store credit, or exchange, subject to our return policy.
Refund Eligibility
Please view our full Returns Policy here.
Overall rating: 4.7943926 / 5 from 749 reviews.
The Serenity Scrunch Shorts 4" in Black, a limited-edition collaboration with Isabelle Mathers, are praised for their flattering length, high-quality fabric, and excellent fit. Customers appreciate the scrunch detailing and the stunning royal color, though some suggest sizing up for a perfect fit.
Review topics: ["size","fit","length","support","fabric","waist","quality","colour","material","look","feel","line","pockets","shape","comfort","stretchy","cut","style","detail","shipping","butt","shade","stitching","shorts","balance","design","coverage","piece","scrunch","compression"].
"These shorts are such a standout! The scrunch detail is super flattering and gives the perfect sculpted look, while the high-waisted fit feels really supportive and secure. The fabric is soft, stretchy, and comfortable, and the no front seam makes them feel so seamless to wear. The hidden waistband pocket is such a handy bonus too."
"Loved the color its divine and material is great, decided for me a tad too short in length and the scrunch is definitely visible prefer the invisible scrunch style. hoping CBS make an invisible scrunch and 5” length I would buy in a heartbeat."
"The Serenity Scrunch Shorts in black are super flattering and comfortable, with a smooth, supportive feel that hugs in all the right places. The high-waisted fit stays put during gym and Pilates, and the no front seam makes them even more comfortable to wear. The scrunch detail is subtle but really enhances your shape, and the 4” length is the perfect balance of coverage and style. Plus, the hidden waistband pocket is a handy bonus. Such an easy, versatile staple you can wear for workouts or everyday."
"I’ve been wearing CSB since ‘23 and it has been my go to since! So inlove with the serenity fabric, it’s genuinely the most versatile in my opinion; whether it be strength sessions, running (ALWAYS in CSB serenity shorts, can’t catch me wearing anything else during my runs), pilates. . i could go on! The perfect balance of soft, stretchy and just the right amount of compression to make you feel and look your best. This colour specifically is by far my favourite. This brand has come so far from when they first started. . and it’s so amazing to see slay after slay with their new releases/collections."
"I loved the fabric of these shorts but I will say it is a very compressive fabric. On my tougher days I get a bit of muffin top but if paired with a longer top its okay! I love the chili red i believe its THE perfect shade of red. And its just great quality."
"I bought these shorts to pair with the Freedom Halter Tank, and they work so well together! The fit is comfortable and flattering, and the overall silhouette feels effortlessly put together. They're easy to style, versatile, and make a great matching set for everyday wear!"
"I was scared these might roll up when I walk, but they stayed put for my entire walk. I love the scrunch back, they are so fit and flattering."
"really good quality the color is awesome"
"Super flattering and perfect for activewear. The Serenity fabric feels smooth and supportive with good compression, which makes them great for workouts or even just everyday wear"
"I love this scrunch shorts especially in chilli colour, I think I kinda like non invisible scrunch as the design of the scrunch makes everything so cuteee"
