Three-layer protection
A soft inner layer, quiet waterproof middle and soft outer finish at the underarm.
Visible sweat protection, built into the layer underneath.
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infix
in-fix the protective undershirt built for sweat. Made for the shirt above it.
What happens underneath should not reach the shirt above.
Visible underarm sweat can change what you wear, where your attention goes and how much of the day you spend managing your shirt.
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Visible sweat transfer
WHAT HAPPENS
Underarm moisture can move through an ordinary layer and show up on the shirt above--sometimes before you realize it.
WHY IT MATTERS
One visible patch can make the shirt you chose feel like the wrong choice.
Deodorant marks
WHAT HAPPENS
Deodorant can transfer from skin to fabric, leaving visible marks or residue inside the shirt.
WHY IT MATTERS
The shirt you chose starts collecting the evidence of the day at its highest-contact point.
Underarm buildup
WHAT HAPPENS
Sweat, skin oils and product residue can collect in the underarm area over repeated wears.
WHY IT MATTERS
The part of the shirt closest to the body takes repeated contact before the rest of the shirt does.
The backup plan
THE ROUTINE
An extra shirt in the car. Paper towels in the restroom. A jacket that stays on. Waiting until the last possible moment to get dressed. The backup plan becomes part of the day.
WHAT IT COSTS
Each workaround asks for more time, more attention or another compromise from the shirt you wanted to wear.
Built differently underneath.
Premium materials, clear purpose and no unnecessary complexity.
Designed to disappear
A low-cut, close-fitting shape is designed to sit beneath the shirt above.
Soft micro-modal body
95% micro-modal with 5% spandex for a soft hand and comfortable stretch.
Protection without the crinkle
The waterproof barrier is designed to stay quiet during normal wear.
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Stop thinking about it.
2-4 million. That is how many sweat glands people are born with. Sweating is normal--it is how the body helps regulate temperature. Infix does not try to stop it. It adds protection underneath to help keep visible underarm sweat from reaching the shirt above.
Built for less checking, less planning around color and less attention spent on what might be showing. Put the protection underneath, then get on with the day.
How Infix Core works
A premium three-layer system in the underarm zone. Each layer has one clear job.
Absorb
Soft micro-modal takes first contact with underarm moisture.
Block
A quiet waterproof middle layer helps block moisture from moving outward.
Separate
A soft outer layer completes the system beneath the shirt above.
SWEAT IS WHERE WE START.
One problem first. A larger idea underneath.
Our undershirts begin with visible underarm sweat. But the idea behind Infix is larger: build better under-clothing around protecting what people choose to wear above it.
Frequently Asked Questions
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How does Infix Core work?
Three layers work together at the underarm: a soft inner layer absorbs, a quiet waterproof middle helps block transfer and a soft outer layer completes the system.
Does it stop me from sweating?
No. Infix does not stop your body from sweating. Our undershirts create a physical barrier designed to help keep underarm moisture from moving outward.
What does three-layer construction mean?
The underarm area contains a micro-modal inner layer, a silent waterproof middle layer and a second micro-modal outer layer.
What are your undershirts made from?
The current undershirt body is 95% micro-modal and 5% spandex. The underarm construction also contains the waterproof middle layer.
Is the waterproof layer noisy?
The middle barrier is made to be silent, without the crinkle associated with a typical waterproof material.
Will the undershirt show beneath my outer shirt?
Visibility can depend on the outer shirt's neckline, fabric, fit and color.
Which colors and sizes are available?
Current colors, sizes and availability appear on each product page.
Is Infix only about visible sweat?
Visible underarm sweat is where Infix starts. The larger idea is protective under-clothing built around what people choose to wear above it.
Protect the shirt you chose.
Start with Infix undershirts--designed to help keep visible underarm sweat from reaching what you wear above them.