OBSESSED
"I am obsessed with the shape and scrunch of these shorts. They fit so well on the body. They are the perfect length and coverage! I would highly reccomend! The colour is also perfect"







for all orders over $150 (USD)
within 30 days (exclusions apply)
A stand out in both design and impact, our 4 inch active shorts are built to elevate and support your training and lifestyle.
- Scrunch-bum detail
- No front seam
- High-waisted
- 4” inseam length
- Hidden pocket in waistband
- 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: 4.7925467 / 5 from 805 reviews.
The Serenity Scrunch Shorts 4" in Black are highly praised for their flattering look, buttery soft feel, and amazing quality. Customers appreciate the perfect length, great material, and the scrunch feature that prevents riding up. While most find the fit and fabric excellent, there are mixed opinions on sizing.
Review topics: [size, fit, length, support, fabric, waist, material, colour, design, pockets, quality, line, look, feel, shape, addition, comfort, style, cut, piece, detail, butt, shade, shorts, coverage, stitching, texture, stretchy, balance, scrunch].
"I am obsessed with the shape and scrunch of these shorts. They fit so well on the body. They are the perfect length and coverage! I would highly reccomend! The colour is also perfect"
"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 fabric and colour but the stitching was off at the top."
"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 waist for the shorts are super flattering! But it doesn’t compress the glutes so it still gives that lift! Love them and the material is amazing."
"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 love the serenity line usually, but for some reason this red color with the fabric/material seems tighter than usual. I love the color but the fit runs small."
"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!"