Vaude Sioux 400 XL SYN

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Extra long synthetic sleeping bag

  • 2-season (for late spring to early autumn),
  • pleasantly warm
  • body contoured mummy shape
  • eco-friendly and fair manufacturing

Warmth whenever and wherever you need it! This breathable and easy-care 2-season synthetic fill mummy sleeping bag is also environmentally sustainable, made with bluesign® certified materials. The Sensofiber micro-fiber fill reflects body heat yet efficiently transfers moisture away from the body and so maintains a wonderfully comfortable sleeping climate. As all synthetic fibers, Sensofiber warms even when damp, is quick drying, easy to maintain and long-lasting. The Sioux 400 is a solidly reliable, warm outdoor sleeping bag for trekking and cabin tours in moderate climate zones.

Product Features
  • inner pocket for essentials
  • for trekking tours in mild climates
  • body contoured mummy cut for optimal heat management
  • contoured hood
  • exceptionally soft and skin-friendly fabric with bluesign® standard
Suitable for
  • Trekking,
  • Hiking Ambitious
  • Main fabric: 100% Polyester; 50D 300T Ripstop;
  • Lining: 100% Polyester; 50D 300T;
  • Filling: 100% Polyester; 3D Sensofiber.
  • Weight: 1100 g 
  • Fill Weight: 450,00 g 
  • Length: 235,00 cm 
  • Shoulder Width: 85,00 cm 
  • Foot Width: 65,00 cm 
  • Temperature Comfort: 8 °C 
  • Temperature Limit: 3 °C 
  • Temperature Extreme: -11 °C 
  • Pack Size: 20 x 20 cm 
Materials & Technologies
1 Layer ConstructionOne-layer construction    2 Way ZipTwo-way zipper    3D Foot Section3D footbox
Anatomic HoodAnatomic hood     Hood DrawcordHood drawcord     Inner PocketInner pocket     
Kompression PacksackCompression packsack

The classic sleeping bag shape. The mummy cut is recognized by its conical shape: the sleeping bag narrows toward the feet. Its body hugging shape minimizes the amount of air that needs to be warmed up for better thermal efficiency. The cut also means that less material is used than in other shapes. This makes the sleeping bag lighter at a comparable thermal performance and it can be packed down smaller.


Sensofiber is a microfiber that is used to reflect body heat. Sensofiber insulates well even when wet, dries quickly, is very long-lasting, as well as durable and easy to care for.

Green Info

We strive for good working conditions and wages for all workers. We are a member of the Fair Wear Foundation (FWF) and we are committed to continuously improve working conditions at all of our production facilities. We monitor these conditions regularly. VAUDE has achieved leader status, the highest status of FWF membership.

Green Shape

With our Green Shape label, we offer functional, environmentally-friendly  products made from sustainable materials. They are manufactured under fair working conditions along the entire supply chain. The criteria for the label are strict and transparent. They are under constant review and cover the entire lifecycle of the product from design, through production, care and maintenance, to repair and the product’s end of life.