Say 'hi' to your biggest supporters
Engineered by athletes, loved by many. Onni has been crafted to not ride-up, slide down or cause any friction while moving. Choose maximum comfort, in underwear that moves with your body.
Engineered for performance and crafted for comfort. Discover the world’s most comfortable underwear.
Don't Just Take Our Word For It.
What’s not to love about quick dry, moisture wicking and anti-chafing underwear? Sometimes our customers say it best.
Bill Frohlich
Lightweight
"Amazing, lightweight, comfortable. Don't buy any other undies.
Ryan Walker
Great For Under Scrubs
"Really really comfortable and extremely light" Great for the long shifts at the hospitable under scrubs. Will definitely buy more!"
Herman
Highly Recommend
I highly recommend Onni if you are active or very padantic about your underwear. I wear mine when working, jogging and sometimes even forget that I'm wearing underpants. What a great product.
Krush
Silky Smooth
This is a great product really good fit no seams very comfy and silky smooth.
Liya D.
Super Light
Super light and feels as though you aren’t wearing them. Recommend them to casual users and those who are more active.
Jen Chemaly
Amazing Service
This product is amazing and the service incredible. Thank you so much.
Ryno Griesel
5-Star Review
(Ryno didn't write anything, but you seriously need to Google this legend - thanks Ryno!)
Comparison
Still wondering which Onni is best for you? Check out this side-by-side comparison.
Active
Elite
FAQ
We're here to help
How long will it take to get my order?
Typically 1-3 business days. We ship from Cape Town or George, whichever location is nearest to you.
Do you have a physical store?
Find Onni at our physical store in Tygervalley Mall – right by Entrance 9. Come feel the difference!.
We are regulars at Cape Town Marathon, Cape Town Cycle Tour and more. Ask a retailer in your area about Onni, and leave your number ;)
Which size am I?
For the perfect fit, refer to our size chart in the website menu.
Where is Onni made?
Proudly designed in South Africa, tested by real men. We know the terrain, the sweat, the sun - and our product reflects that. Local energy, global standards.
How do I take care of my Onni?
Washing Instructions:
- Cold wash only (30°C max)
- Turn inside out before washing to protect the fabric
- Use mild detergent - no bleach, no harsh chemicals
- Wash with similar colours
Avoid:
- Fabric softeners - they break down performance fabrics and reduce breathability
- Hot water - it weakens the fibres and elasticity over time.
Drying Instructions:
- Air dry only - hang it up in a cool, shaded area
- Do NOT tumble dry - high heat damages stretch and shape
- Avoid direct sunlight - UV can fade colours and weaken the fabric.
What makes Onni different from regular underwear?
Onni is not regular underwear - it's performance-engineered comfort.
Designed for movement, made for everyday life. Whether you're diving into the ocean, powering through a cycle, or navigating a tough day, Onni supports you where it matters most - no chafe, no distractions, just premium fit and breathability.
What materials do you use in your underwear?
Soft. Durable. Eco-conscious. Onni underwear is crafted using high-performance fabrics designed for breathability, moisture-wicking, and all-day wear. And here's the kicker - our packaging is made from recycled materials, because what goes around, comes around.