No subscription
Mystery Underwear
One delivery per month, free delivery in Switzerland.
Boxer size
Sock size
Please choose your size first.
✔ Free delivery · ✔ Cancel at any time
Mystery Underwear
Every month, a branded boxer and a pair of branded socks arrive in your letterbox. You choose your size at the start, and everything else happens without you. Which brand and which pattern arrive, you find out when you open the box.
How does the subscription work?
You choose your sizes and your plan, then place a single order. After that, a delivery goes out every month: a flat box that fits through the letterbox, containing a branded boxer and a pair of branded socks, delivered by Swiss Post. Sizes range from S to XL for boxers and from 39 to 46 for socks, and can be changed at any time in your customer account.
What is the difference between Undy Flex and Undy Plus?
Undy Flex is paid monthly and can be cancelled at any time, with no minimum term. Undy Plus is paid once for 3, 6 or 12 months: the price per month is lower, it stays fixed for the whole term, the subscription renews at the end of the chosen period and can be cancelled at any time. Either way, the underwear costs less than buying it individually, and delivery is included.
Why is the brand a surprise?
Every delivery is a chance to discover new branded underwear. You choose your size, then we select the model: the brand, colour and pattern are revealed when you open your box. This way you vary your styles and discover boxers and socks you might not have chosen yourself. You may even find your new favourite underwear brand.
Which brands can arrive?
Tommy Hilfiger, Calvin Klein, HUGO, BOSS, Lacoste, Replay, Gant, Nike, Adidas, Puma, Reebok, New Balance and other brands from our range.
When does the delivery arrive?
Deliveries are sent out in the middle of the month and arrive within two to three working days with Swiss Post. Orders placed by the 12th of the month are sent out that same month; later orders start the following month.
What is included
- One branded boxer per month, in your size
- One pair of branded socks per month, in your size
- Original items, bought directly from the brands
- Free delivery in Switzerland and Liechtenstein, with no minimum order
- Undy Flex: can be cancelled or paused at any time
- Undy Plus: fixed price for the whole chosen term
- Swiss company, shipping from Switzerland
All about the subscription.
Every month, a branded boxer and a pair of branded socks arrive in your letterbox. You choose your size at the start, and everything else happens without you. Which brand and which pattern arrive, you find out when you open the box.
What is included
- One branded boxer per month, in your size
- One pair of branded socks per month, in your size
- Original items, bought directly from the brands
- Free delivery in Switzerland and Liechtenstein, with no minimum order
- Undy Flex: can be cancelled or paused at any time
- Undy Plus: fixed price for the whole chosen term
- Swiss company, shipping from Switzerland
How does the subscription work?
You choose your sizes and your plan, then place a single order. After that, a delivery goes out every month: a flat box that fits through the letterbox, containing a branded boxer and a pair of branded socks, delivered by Swiss Post. Sizes range from S to XL for boxers and from 39 to 46 for socks, and can be changed at any time in your customer account.
What is the difference between Undy Flex and Undy Plus?
Undy Flex is paid monthly and can be cancelled at any time, with no minimum term. Undy Plus is paid once for 3, 6 or 12 months: the price per month is lower, it stays fixed for the whole term, the subscription renews at the end of the chosen period and can be cancelled at any time. Either way, the underwear costs less than buying it individually, and delivery is included.
Why is the brand a surprise?
Every delivery is a chance to discover new branded underwear. You choose your size, then we select the model: the brand, colour and pattern are revealed when you open your box. This way you vary your styles and discover boxers and socks you might not have chosen yourself. You may even find your new favourite underwear brand.
Which brands can arrive?
Tommy Hilfiger, Calvin Klein, HUGO, BOSS, Lacoste, Replay, Gant, Nike, Adidas, Puma, Reebok, New Balance and other brands from our range.
When does the delivery arrive?
Deliveries are sent out in the middle of the month and arrive within two to three working days with Swiss Post. Orders placed by the 12th of the month are sent out that same month; later orders start the following month.
What arrives in your letterbox every month.
A flat box that fits through the letterbox slot. Inside, your branded item in your size, in carefully presented UNDY packaging.
How is the underwear subscription delivered? Each month, UNDY.ch sends a flat cardboard box with Swiss Post, sized for the letterbox and with no postage costs, throughout Switzerland and Liechtenstein. Delivery takes two to three working days, with no minimum order value.
- 01In the middle of the monthYour box leaves our warehouse in Switzerland.
- 02Two to three working days laterDelivered by Swiss Post, straight into your letterbox.
- 03When you open itOnly then do you discover this month's brand and colour.
The brands you may receive. Which one exactly? That is this month's surprise.
★★★★★«Finally a gift idea that is both a lovely surprise and really useful. 💪💪💪» Jérémy S.
★★★★★«The products are great, very good quality and varied.
All in very well finished packaging.» Jonathan M.
★★★★★«The boxers are very good quality and the deliveries always arrive right on time.» Oliver L.
Is UNDY.ch trustworthy? UNDY.ch is a Swiss company that has been delivering to its subscribers in Switzerland and Liechtenstein since 2025. The items are original branded products, bought directly from the brands, with no second lines or seconds. Delivery is included. The Flex subscription can be cancelled at any time; the gift subscription ends by itself at the end of the chosen term.
Not convinced yet?
Try it just once first?
With the Discovery Pack, you receive a single delivery, with no subscription and nothing to cancel. The brand remains a surprise until you open it.
from CHF 13.90
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