Change every day, the moment you put them on
One move in the morning, and your relationship with the day changes completely. Here's what actually changes.
No more 50 adjustments a day
The anatomical pouch keeps everything in place, without pressure. Finally, no more awkward adjustments at the office, in the car, or in a client meeting.
Stay fresh, even in the heat
Mulberry silk naturally regulates body temperature. Up to 3°C cooler than a cotton boxer, even under a suit in summer.

No more irritation
Flat seams and the silky fabric eliminate all friction. Ideal for sensitive skin or long days on your feet.
A quiet signal she notices
A man who pays attention to invisible details changes his posture. She notices before you do, even if she never mentions it.
This week's reviews
Excellent 4.8 / 5
Markus Brunner
Honestly, completely surprised. 11 hours of nonstop wear, not a single tug, no chafing, nothing. My old cotton boxers went straight in the bin the next morning.
Stefan Maurer
My wife kept at me until I ordered them—she was tired of watching me shift around on the sofa. She was right, of course. This week I'm ordering the other three colors.
Fabian Koller
Perfect for long office days.
Thomas Huber
I've tried several premium brands over the past few years, usually disappointed after a few washes. These hold their shape and stay soft after two months of daily wear. The waistband doesn't give, which is genuinely impressive. I recommend them without hesitation to colleagues who travel a lot. Clearly in a class of their own.
Lukas Frei
Very comfortable to wear, really nicely soft. Small note: I'd go a size up if I ordered again—fits a bit snug on me...
Andreas Keller
Two weeks across Europe by train, on business, zero complaints. For the first time, a boxer actually delivers on what it promises. My wife said I move differently—whether that's why, I'm not sure, but I'll take it 😄
Why the HELVIA SWISS boxer?
HELVIA
Cotton boxers
Frequently asked questions
Is silk really more comfortable than cotton?
Yes — and you’ll feel the difference right away. Mulberry silk glides over your skin without friction, naturally regulates temperature, and stays up to 3°C cooler than cotton.
You’ll notice it within the first hour.
How do I find the right size?
Choose your size based on your waist, measured at navel height, loose and without pulling the tape tight.
M (76–86 cm), L (86–96 cm), XL (96–106 cm), 2XL (106–116 cm), 3XL (116–126 cm). If you’re between two sizes, we recommend the larger one for maximum comfort.
How do I care for my silk boxers?
Machine wash at 30°C on a gentle cycle, ideally in a laundry bag.
No tumble dryer, no fabric softener, no bleach. Dry flat or on a hanger. With this care, that silky feel lasts for years.
Are they suitable for sensitive skin?
Absolutely. Mulberry silk is naturally hypoallergenic and antibacterial.
Flat seams prevent any irritation — ideal if regular boxers leave you with chafing or redness.
What if they aren’t the most comfortable boxers I’ve ever worn?
You have a 90-day money-back guarantee, no questions asked.
Wear them for a full day. If they aren’t the most comfortable boxers you’ve ever had, get in touch and we’ll refund you in full.
How long does delivery take?
Ships within 24–48 hours from Switzerland, delivered in 5–7 business days.
Free delivery on orders over CHF 60. You’ll receive a tracking number by email as soon as your order ships.
Ships in 24–48 hours, delivered in 5–7 business days.
90 days to try them, full refund.
TWINT, credit card, and PayPal accepted.
A team in Switzerland is here for you.

