Move with ease in Sustain Tanks designed for studio sessions, travel, and everyday layering. A clean athletic cut, breathable comfort, and lightweight feel keep you centered on and off the mat. The fabric sits smoothly against skin so you can focus on form, breath, and flow.
A refined silhouette sits smoothly over shorts or joggers and will not ride up during flow. The armholes and neckline are shaped for mobility so you can move freely through warmups, peak poses, and cooldowns. Subtle detailing keeps the look minimal while supporting confident movement.
Breathable Build, All-Day Ease
Lightweight, quick-drying comfort helps regulate temperature from class to commute. Soft against skin and easy to layer, these tanks transition seamlessly from practice to daily wear. The fabric dries quickly after intense sessions so you stay comfortable longer.
Mindful Materials, Minimal Design
Crafted with eco-conscious materials and durable construction, Sustain Tanks hold their shape and color over time. The minimalist aesthetic makes them simple to style across your active wardrobe. Fewer distractions and thoughtful finishes make them a go-to layer every week.
Yes. The breathable build and athletic cut support full range of motion for yoga flows, cross-training, and recovery days. The fit stays close without restricting movement.
Do they work as a base layer under hoodies or jackets?
Absolutely. The streamlined profile sits clean under mid-layers without bulk, ideal for warmups and cooler mornings. It also pairs well with lightweight outerwear after class.
How do they fit?
They are form-following without feeling tight, with comfortable stretch that stays put through movement. Choose your usual size for a close, athletic feel.
Are they made with eco-conscious materials?
Yes. Sustain Tanks prioritize responsible materials and long-wearing construction for lower-impact performance, season after season.
Will the fabric hold shape after washing?
Yes. The tank is designed to retain structure and softness through repeated wear and washes, helping it look fresh longer.
What should I pair it with for class?
Pair a Sustain Tank with 4-rth joggers or eco track shorts for a balanced studio-ready outfit, then add a lightweight layer for the commute.
Well lets see, I have 5 pairs of these and many other shorts and pants from 4rth. My all time favorite clothing. Comfy, durable, fits amazing and inspires confidence, (form fitting without revealing). If I had to do yoga without 4rth clothing I'd be lost!
I took a break from my workouts in these cuffed men’s yoga pants but I am glad to be back. They fit great and hold their form through intense heated vinyasa practices. Thank you, Doug and Cesar!
Great products! Have bought multiple pairs of their pants and tanks. It's nearly impossible to find good yoga clothes for men/masc identifying people, and 4-rth is one of the best out there. Highly recommend.
4-RTH is the best most eco friendly , good for your body and feels so good on ! Best for yoga , gym and all around one of the best quality ECO products on the market ! Thanks for keeping us sexy , fit and comfortable:) mahalo from Hawai’i!!
These are comfortable and cool all rolled into one. Great for kicking it back at home or any casual event. Yoga. Running. There is no limit.
Long Cuffed Jogger & Yoga Sweat Pants (Charcoal)
Thomas S
Comfy & Sexy All Day
Absolutely love the fit and feel.
Eco-Track & Yoga Sweat Pant (Solid Black)
Pete Candler
Perfection.
These are hands down the most comfortable and attractive shorts I’ve ever owned. I’ve never gotten as many compliments about an article of clothing before (all from women, fwiw). I have these in three different colors but these seem to get the most positive feedback. I’ve worn them to the beach (even swam in them), to the grocery store, to Pilates. Had to get up my nerve to go all white in public (with no underwear) but it was totally rewarding. They’re the best.