Transform every day the moment you put them on
One move in the morning, and your whole relationship with the day changes. Here’s what actually changes.
No more 50 adjustments a day
The anatomical pouch keeps everything in place without compression. You can finally stop those awkward adjustments at the office, in the car, or in meetings.
Stay cool 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.

Say goodbye to irritation
Flat seams and a silky feel eliminate all friction. Ideal for sensitive skin or long days on your feet.
A quiet signal she picks up on
A man who tends to the invisible details carries himself differently. She notices before you do, even if she never says a word.
Review of the week
Excellent 4.8 / 5
Thomas Bürki
Genuinely blown away. I worked 11 hours straight in them—zero adjustments, zero chafing. My old cotton boxers went straight in the trash the next day.
Laurent Mottier
Bought them because my wife was tired of watching me fidget on the sofa. She was right. I’m ordering the other three colors this week.
Nicolas Favre
Perfect for long office days.
Patrick Oberson
I’ve tried plenty of premium brands over the last few years, and I’ve often been disappointed after a few washes. These still hold their shape and softness after two months of regular wear. The waistband doesn’t stretch out—it’s impressive. I’d recommend them without hesitation to colleagues who travel a lot. Truly a cut above.
Julien Rochat
Really comfortable to wear, genuinely soft. One small caveat: I’d go a size up if I were doing it again—they run a bit snug on me...
David Progin
Two weeks crisscrossing Europe by train for work, and not a hint of discomfort. This is the first time a boxer has actually lived up to that promise. My wife noticed I carry myself differently—not sure if it’s related, but hey 😄
Why the HELVIA SWISS boxer?
HELVIA
Cotton boxers
Frequently asked questions
Is silk really more comfortable than cotton?
Yes, and the difference is immediate. Mulberry silk glides over the skin without friction, naturally regulates temperature, and stays about 5°F cooler than cotton.
You'll feel it within the first hour of wear.
How do I choose my size?
Choose your size based on your waist measurement at the navel, without pulling the tape tight.
M (30–34 in), L (34–38 in), XL (38–42 in), 2XL (42–46 in), 3XL (46–50 in). If you're between two sizes, go up for maximum comfort.
How do I care for my silk boxer briefs?
Machine wash at 30°C (86°F) on a delicate cycle, ideally in a laundry bag.
No tumble drying, no fabric softener, no bleach. Dry flat or on a hanger. With this care, your boxer briefs will keep their silky feel for years.
Are they suitable for sensitive skin?
Absolutely. Mulberry silk is naturally hypoallergenic and antibacterial.
The seams are flat to prevent irritation—ideal if you get chafing or redness with your usual boxer briefs.
What if these aren't the most comfortable I've ever worn?
Love them or get your money back within 90 days, no questions asked.
Wear them for a full day. If they aren't the most comfortable boxer briefs you've ever worn, contact us and we'll refund you in full.
What are the delivery times?
Ships within 24 to 48 hours from Switzerland, with delivery in 5 to 7 business days.
Free shipping on orders over CHF 60. You'll receive a tracking number by email as soon as your order ships.
Ships within 24–48 hours, arrives in 5–7 business days.
90 days to try them, full refund.
TWINT, credit card, and PayPal accepted.
A Switzerland-based team, here for you.

