The Trimline 5" Biker Short holds you through training in exceptionally soft fabric, its high-rise sculpting waistband drawing a clean, unrestricted line.
Why you'll love it:
Fabric
73% Ciclo Nylon, 27% Spandex
Care
Machine wash cold, tumble dry low
Built on CiCLO® biodegradable fiber.
CiCLO® is built into our recycled synthetics to do two things: shed fewer microplastics in wear and wash, and biodegrade rather than linger. Independent testing shows CiCLO treated fibers biodegrade in under four years — so they don’t add to long-term microplastic pollution.
Certified by ECO PASSPORT by OEKO-TEX®.
| Sizing | Numeric Size | Waist (inches) |
|---|---|---|
| X-Small | 0–2 | 24–26 |
| Small | 4–6 | 26–28 |
| Medium | 8–10 | 28½–30½ |
| Large | 12–14 | 31–33 |
| X-Large | 16–18 | 33½–36 |
What's In Your Legging
Feel
Buttery soft, moderate compression
Wear
Gym, running, yoga, HIIT, cycling
Fabric
Advanced performance fiber
Technology
CiCLO® biodegradable
Tested
Third party verified
Built to move with you — and tested to prove it. CiCLO® advanced fibers delivers the compression and recovery you expect, independently verified free of BPA, PFAS and 50+ other chemicals most activewear brands don't test for. Performance you can feel. Safety you can verify.
Independently tested by a third party lab. Every finished product. Results available upon request. Learn more about our fabric →
Overall rating: 5.0 / 5 from 48 reviews.
The Trimline 5" Biker Short offers a soft, supportive fabric with a high-rise fit that moves naturally with your body. Customers appreciate its comfort and flattering silhouette, making it ideal for any training.
Review topics: [fit, fabric, length, leggings, material, feel, quality, wear, shorts, waistband, clothing, chemicals, proof, brand, compression, pair].
"I love these shorts! I wear them to workout or just to run errands/around the house. They are flattering and perfect compression - they aren’t too tight where they squeeze you, but they still feel supportive & don’t stretch out after washing & wearing them. Best part is knowing they are non toxic and my skin isn’t absorbing harmful chemicals as I wear them all day!! Buy them!"
"These are my absolute favorite shorts! I ended up getting a small and XS. While both fit, the Small is more comfy for everyday wear (and doesn't pinch in at the thighs). I'm 5'1 and 100lbs. The size small is so comfortable! It helps keep my tummy area looking great, and it's perfect for summer days out. I really wish there were more color options out for these. I'd love to see pink!"
"The fabric feels high quality. Usually wearing plastic stuff bothers me but not in this case. It feels breathable, comfortable and soft, but also strong. It’s also great knowing it’s not toxic. I will just say this here, I'm always on the hunt for low waisted workout clothes. Nobody does them anymore. They are just so much more comfortable to me with the shape of my hips. On these the waist is fine, not crazy high. I'm used to it always being a little higher than I want."
"I have been struggling to find a nontoxic pair of biker shorts that can withstand the summer heat and humidity for outdoor walks. All the other nontoxic brands I had tried had 7” inseams that would just about hit my knee on my short 25” inseam legs, plus they were not squat proof at all. Thankfully, I found Definite Articles and the 5” short hits mid thigh for me and looks great. It doesn’t roll up on walks (rolls up a little with strength training but as a pear shape with muscular thighs all shorts do on me) and is squat proof! I have a 30” waist and 43” hips and the size large is pretty much a perfect fit and very comfortable. I will definitely be investing in all the colors."
"Some stretchy workout materials slip down during a run, but these shorts stay in place. They’re really comfortable. I like the length and how high the waist sits. I think they run true to size."
"Surprised by the fit, quality and comfort of the biker short. I will be purchasing another pair or two!"
"LOVE these shorts! So comfortable with enough compression but still does not dig into you like other bike shorts do. This is my second pair."
"Very impressed with the fit for being non toxic leggings."
"They are so comfortable and a perfect fit!"
"Fit true to size. Doesn’t move for high intensity workouts/running. I do wish there was a side pocket for gels, the waist pocket does hold a key"
