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.
Win R10 000 this Dezamba!
ENTRY REQUIREMENTS
To qualify, participants must:
1. Follow the official Onni Instagram account.
2. Post a photo of their Onni in a wild location to their Instagram Story.
3. Tag @onni.co.za and three friends in the story.
The winner will be announced on the 15th of Jan 2026. Get your pair today to enter the fun.
May the bravest SAffa win!
Onni's winning formula
Ice-silk Material
The ice-silk material allows for unmatched comfort while ensuring everything stays in place
Anti-Chafing
The Onni is designed to stay put—even during the most intense workouts—ensuring you don’t chafe while pursuing excellence.
Quick-Drying
Our moisture-wicking material ensures you stay dry, no matter how heated it gets.
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.
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?
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?
Onni’s are designed with simplicity in mind. The fit is tailored to men’s pant waist sizes-no more guessing when it comes to finding the perfect fit.
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.
