Billerbeck Interlaken 4-season duvet - Naughty Linen
Billerbeck Interlaken 4-season duvet - Naughty Linen
Billerbeck Interlaken 4-season duvet - Naughty Linen

Billerbeck Interlaken 4-season Duvet

Regular price CHF1,090.00
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With the four-season duvet, you have the advantage of a one-time purchase and great flexibility. By combining two duvets of different thicknesses, you can enjoy a wonderful sleeping environment. Billerbeck Interlaken 100 4-Saisons-duvet - is made of two separate duvets, that you attach together.

Both duvet parts are quilted, the light one with small checks for the summer, the warm one with the large checks for spring and autumn. Both parts buttoned together make a warm duvet for cold winter nights as an air cushion forms between the two duvets. This creates a particularly warm duvet. So you get 3 duvets at once.

However, please also pay attention to your personal wishes here. A buttoned blanket is heavier than a special winter blanket. If you prefer a light blanket in winter, then perhaps a real winter duvet is more suitable for you with down filling. Those who like it simple and uncomplicated, want to react to the temperatures of the seasons and still rely on a single solution, will appreciate a four-seasons cover.

Please notice this duvet comes in two versions: Interlaken 100 and Interlaken 90. For Naughty Linen clients, we offer the highest of the range - Interlaken 100 4-Saisons-duvet, which means the duvet is filled with 100% new, pure, European, particularly large flake goose down.

What is the difference between Swiss Dreams 4-season duvet and billerbeck Interlaken 4-season duvet?

Swiss Dreams is the casual line of products by billerbeck, made in Switzerland, where the quality and price ratio is optimal. Swiss Dreams use smaller goose down flakes than the classic billerbeck line, which means less filling power. The main brand billerbeck uses extra-large and flaky goose down for their products - your duvet or pillow will be lighter in weight and fluffier.

If you want to extra spoil yourself - choose Dauny line. Dauny was created for people who are used to buying only the best. Only the largest, flakiest, and best quality goose downs are used for Dauny products - Polish goose downs that are the number one in Europe. The absolute top of the Dauny range is the Icelandic Eiderdown duvets. We have full range of Dauny products available and ready to help you in choosing the best one for your needs, just drop us a line

  Billerbeck Interlaken 4-Saison-Duvet Füllung 100
Heat points 1- -punkt.jpg +  2 *  = 
4 season
Size Weight
160 x 210 cm
250 g + 450 g
200 x 210 cm 310 g + 560 g
240 x 240 cm 430 g + 770 g


100% cotton, batiste supérieure with SanProCare finish,
Öko-Tex Standard 100
Filling: 100% new, pure, European, particularly large flake goose down, white, VSB standard
Advantages: All seasons, NOMITE good for allergy suffers
Washable: 60 ° C

What is the difference between goose down and duck down?

Goose down is larger and stronger than duck down, which is why a duvet with 100 % goose down has a better fill power. The better quality is a result of the fact that geese are larger than ducks and generally have a longer life. Things you should pay attention:

  • Goose down flakes is bigger than duck down flakes, which means: more fluffy and soft, lighter in weight, better isolation.
  • There are different quality of goose downs that varies greatly - the size and the density. The bigger and more dense the goose down, the more fluffy your duvet or pillow. The difference can be huge. 
  • "Swiss made" - indicates that the downs undergo a special state-of-art cleaning process at billerbeck Switzerland factory, where they are treated in high temperature and all dust is removed. It takes hours and many different stages to prepare the down for billerbeck standard. 

That said, the overall quality of the duvet matters more than the type of down. The higher the down quality, the higher the fill power and the better the insulation. For Interlaken 100 4-Saisons-duvet billerbeck used only 100% new, pure, European, particularly large flake goose down.

Produced in Switzerland, as a harmonious combination of content and frame. For your weightless sleeping pleasure. Quality duvets filled with goose down from certified sources.
Swiss Made - washed, sorted, and manufactured at the Swiss production site under strict hygienic conditions. Sustainable consumption - ethical, ecological, and conscious decisions. Nature, environmental, and animal protection must go hand in hand worldwide.
The first-class goose down and feathers come exclusively from controlled, traceable origin and extraction and are certified. Great importance is attached to the fact that the geese are not plucked alive and are not kept for foie gras production.


    Please notice linen bedding color shade may vary in different pictures. That is because of the different lighting of the photographs - natural morning sun, afternoon sun, artificial light, or cloudy day - this affects the tone and intensity of the color. Your linen bedding becomes alive! And so it should be.

    Instead of showing only studio photoshoot of the linen bedding, we decided to show you a variety of looks. So you can get inspired by various options! You can get an idea of how different color and model linen sheets can be combined and how much it changes overall look - one different color linen pillowcase or fitted sheet, and your bed seems completely different!

    As well we wanted to show the transition of the shades - your bed linens don't look the same all the time - the color undertones change from the morning sunshine to evening's light. That's the beauty of the cycle of time.

    Do not find a size or colour you are looking for? No problem!

    At Naughty Linen we provide bespoke custom-made service at no additional extra cost! Tell us the size, colour and model of the linens you would like to have. 

    Minimum Order

    Minimum order is one full set per colour and per model and customisation is free:

    - Two same size pillowcases
    - Duvet cover
    - Fitted sheet

    Why there is a minimum order?

    Every new product is very labour intense process that adds many additional hours to the production, as every custom order goes though production cycle:
    - Production manager has to calculate the consumption of the fabric and prices
    - Prepare detailed layouts and specifications
    - Cutting department has to cut the fabrics accordingly to the new drawings
    - Sewing department finishes the product accordingly to the specifications

    We try to avoid any left-overs and waste of the fabric as much as possible. In fact, we are very successful at it - we have almost none! Due to this reason, we ask a minimum of a full set (duvet cover + two same size pillows) per colour. We counted the best ways to cut the fabrics to maximize the consumption of the piece and not to have materials to throw away.

    How does it work?

    - Please email your custom sizes and colours wanted at
    and we will provide you with the quote.
    - The production of the linens will take between 6-8 weeks after the full payment was done for the order. 

    What else can I order?

    - Custom made curtains, bedspreads, flat sheets and decorative pillows available too. 


    We will be happy to answer all your questions:

    call: +41445018300‬
    WhatsApp: +41763807009‬

    For all product & store enquiries please email:

    Why choose us?

    No middleman

    Did you know that you pay at least 3x-5x of sheets cost at any retail? Because of the margins, brand license, distribution, staff, rental costs. And premium price doesn't mean you get premium quality. We get rid of all these necessary things so that we can deliver the best product directly to you. 


    Because we use a small production facility, we are able to offer custom-made bed linen for our clients. In this world of over-consumption, we believe you should have exactly what you need, and we know the painful issue of sizing all too well. If you don't see what you're looking for, just ask us.

    Quality first

    We cut out the middle man, so we don't need to compromise on the quality. We can buy the best fabrics (no itchy linen here!), add extra attention to details (yes, all these satin stitchings have to be made piece by piece by a human being!) and enjoy working closely with our team and our clients.

    Naughty facts