X-Lite 400 (-1℃)



Filled with pure 900 fill power goose down, the sleeping bag compresses down to 5 liters. Its mummy-style design with a hood ensures excellent thermal insulation and makes it ideal for temperatures slightly below 0°C.

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✔ Receive it at home on Monday 27 May

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Lightweight Sleeping Bag

The Cumulus X-Lite 400 sleeping bag, manufactured in Poland, is an upgraded version of the X-Lite 300, with thicker filling and greater thermal insulation capacity. It stands out as one of the lightest and most compact sleeping bags on the market.

When to Use

Unlike the X-Lite 300 model, the X-Lite 400 features an additional 100g of down, making it suitable for temperatures slightly below 0°C when used with a single base layer. If you plan to sleep in colder environments or are sensitive to the cold, we recommend the Payan sleeping bag, with a comfort temperature of around -6°C. This model is ideal for spring, summer, and autumn, retaining heat on cool nights but not extremely cold ones. If you’re looking to reduce volume and don’t want a larger bag, you can combine it with a down jacket using the layering system for temperatures below -5°C.

saco de dormir ligero

Photo by arampp_


It features a classic mummy design with an adjustable hood and trapezoidal chambers that ensure excellent thermal insulation, keeping heat inside. The double-closure zipper covers two-thirds of its length, allowing for easy entry and exit.

saco ultraligero

Photo by cumulus_outdoor

900 Fill Power Down Filling

It is filled with 400 grams of pure Polish goose down with a 900 fill power, ensuring excellent thermal insulation and exceptional compression. For the fabric, one of the lightest on the market is used: Toray® Airtastic, weighing only 19 g/m² and made of 7 deniers with a DWR finish. It is highly resistant to wind and water and designed to prevent down spines from escaping the sleeping bag (Feather Proof).


  • Color: Butternut Toray.
  • Weight: 575g (±5%).
  • Down filling: 400g.
  • Left-sided zipper.
  • For individuals up to 185cm tall.
  • Includes a 5L compression sack.

Measurements Table


Comfort -1℃
Limit -7℃
Extreme -24℃


Dimensions (one size)

Length 202cm
Width 77/42cm
For individuals up to 185cm tall


Ratings and Reviews

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SKU: X-Lite 400 Category: Brand: