They run cooler
A silver-fibre knit with a spandex mesh panel. Cotton absorbs moisture and holds it against the skin - this moves it to the surface, where it evaporates, cooling them.
Men’s health measured
Protect your MASCULINITY
Underwear engineered to run cooler than cotton, and to put a barrier of woven silver between your phone and what matters. Scientifically tested.
University of Ljubljana
Where it was tested
−1.3°C
Max measured vs cotton
99.99%
RF blocked by fabric 2–6 GHz
3.4×
Air permeability vs cotton
What they do
Four things NORMAL underwear DOESN'T DO.
They hold away
A wider, 3D pouch keeps the testicles separated from the body instead of pressing them flat against it. Air moves. Contact heat doesn't transfer.
They shield
Roughly one gram of woven silver across the pouch, lab-tested to block up to 99.99% of radiofrequency energy across the bands phones and Wi-Fi actually use.
They resist odour
Silver is naturally antibacterial- it's why it turns up on surgical dressings. Here it's the fabric itself, not a finish that washes out after a season.
Cooler, measured. Shielded, tested.
Two university laboratories measured the fabric. We measured the wearing. Everything we claim, we can show you - including the part we haven't proven yet.
Evidence
Tested, NOT CLAIMED.
This is a category full of promises. So we label our evidence by who produced it, and we say plainly where it stops.
Independent
Radiofrequency shielding
Laboratory for Radiation and Optics, Faculty of Electrical Engineering, University of Ljubljana. The fabric blocked up to 99.99% of transmitted RF energy across 2-6 GHz.
What this is: a fabric test.
Independent
Air permeability
Institute for Textile Technology, Faculty of Natural Sciences and Engineering, University of Ljubljana. Up to 3.4× the air permeability of cotton, with fibres roughly five times thinner than a human hair.
What this is: a fabric test.
Our own
Worn temperature
One month of paired wear testing during sedentary work — same person, consecutive days, Majella against cotton. Average 0.4 °C cooler; highest single day 1.3 °C.
What this is not: a published clinical trial. We're running one.
Who wears them
Four reasons men FIND US.
Trying for a baby
Half the picture is male, and almost none of the advice is. Start with the two things nobody mentions: heat, and the phone in your pocket.
Thinking ahead
Not yet, but one day. What you wear for the next five years is a decision you're already making - you just haven't made it on purpose.
On the bike, in the gym
A pouch that doesn't compress and a fabric that doesn't hold sweat. It's the compliment we get most often from people who bought them for something else.
Health optimisation
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Majella Underwear
Silver-fibre boxer brief with a structured cooling pouch. Lab-tested at the University of Ljubljana.
In their words
4.7 out of 5.
Opazanja: - lepe - mosnja je precej velika in udobna - srebro zgleda kul, ne moti - hitro se susijo
Filip M.
Realno je ogromna razlika. Imam samo 3 pare in ko so v pranju je bedno spet oblečt navadne...
Denis B.
Sicer sem to pričakoval za to ceno, ampak so realno najboljše gate. ki jih imam. Dizajn je res 3D in diha. Hitro se posušijo in ne lezejo dol
Peter G.
As featured in
Our story
We went looking for this and it DIDN'T EXIST.
New Year's Eve. Four friends and a conversation that started as a joke and turned into two hours. For women there was everything - products, communities, dozens of accounts. For men there was a shelf of supplements and silence.
The first samples were sewn by one of our sisters. They were not optimal. Now they are.
Disclaimer
Majella is underwear. IT IS NOT a medical device and not a treatment.
If you and your partner are trying to conceive, PLEASE SEE A DOCTOR - that is the single most important thing you can do, and it isn't buying underwear.
Free guide
The male fertility guide nobody handed us.
Everything we had to dig up ourselves, in one place. No spam, and no promises we can't keep.