4-Season Double Goose Down Duvet D400 – Daunenstep

DaunenStep D400 4 Seasons Down Jacket: Natural Comfort All Year Round

The DaunenStep D400 4 Seasons goose down duvet , measuring 250x200 cm , is designed to guarantee maximum comfort all year round thanks to its modular structure consisting of two separate duvets (one light and one mid-season) that can be joined together using buttonholes and buttons.

By purchasing on BenasciuttCasa you receive:

• Official DaunenStep 10-year guarantee
• Original case included
• Professional assistance in choosing the best duvet

How a 4 Seasons duvet works

The system allows 3 heat levels:

• Light: ideal for spring and summer
• Mid Season: perfect for autumn and mid-seasons
• Winter: Both combined for high warmth

Supersoft 100% cotton batista lining: soft, hypoallergenic and breathable

The Batista Supersoft fabric is one of the strengths of the D400 line: an ultra-fine cotton, light and silky to the touch, completely hypoallergenic and anti-mite . It guarantees high breathability and maintains a dry microclimate.

100% 730 CUIN down padding: perfect balance

The D400 uses 100% virgin down with a fill power of 730 CUIN , a value that offers:

• natural softness and balanced volume
• adjustable heat without weighing down
• excellent thermoregulating capacity
• constant comfort in every season

Fixed square quilting for even warmth

The fixed square quilting keeps the filling evenly distributed, preventing cold spots. The flat edge with buttonholes allows the two duvets to be joined together conveniently and securely.

Room Temperature: How to Choose the Right Combination

To decide which duvet to use, consider the temperature of your room:

• 20–24°C : light down jacket
• 18–20°C : mid-season down jacket
• Below 18°C : Both combined for complete winter warmth

Personal thermal perception is fundamental

If you're sensitive to the cold , you might prefer to use the winter combination more often; if you're warm , the light or mid-season version will be perfect. The natural down remains comfortable even with the window ajar thanks to its natural hygroscopicity .

The advantages of natural down

Compared to synthetics, a goose down duvet ensures:

• increased transpiration
• dry microclimate
• superior thermoregulation
• significantly longer lifespan

D400 Down Jacket Maintenance

The D400 is designed to last while maintaining high volume and performance.

Washing instructions

• Wash up to 40°C
• Tumble dry to restore volume and softness
• Full wash: every 3 years
• Daily use: ventilate regularly

Why choose the D400 4 Seasons double bed?

The 250x200 cm size offers perfect coverage for a double bed, with warmth that can be customized to suit the season. Thanks to the quality of the filling and the Supersoft cover, it's one of the best Daunenstep duvets for comfort and versatility.