Mummy sleeping bag VAUDE Sioux 400 II S, recycled polyester, 2200×800 mm, blue

VAUDE Sioux 400 II S is a mummy-style adult sleeping bag made from 100% recycled polyester, designed for camping and trekking in moderate climates. With an overall length of 2200 mm, a maximum shoulder width of 800 mm and a minimum foot width of 500 mm, the bag offers an ergonomic, body-contoured cut that retains heat efficiently while remaining packable: packaged dimensions are approximately 400 × 200 mm. The single-layer synthetic Sensofiber fill provides insulation that performs when damp, wicks moisture outward and dries quickly. The outer fabric has a PFC-free Eco Finish for water repellency and dirt resistance, and the product conforms to VAUDE’s sustainability standards and Green Shape criteria.

Advantages

The mummy shape with an anatomic hood and a warmth collar reduces heat loss and creates a comfortable microclimate around the head and torso. Synthetic fill offers insulation even in wet conditions and is quick to dry, reducing downtime on multi-day tours. The long side zip is two-way and dividable for ventilation and for connecting compatible sleeping bags. The outer fabric is soft, skin-friendly and bluesign®-compliant, while construction emphasizes material efficiency, repairability and low environmental impact thanks to recycled materials and PFC-free finishing.

Suitable for

• Summer and shoulder-season camping and trekking
• Hut-to-hut tours where lightweight, packable insulation is needed
• Open-sky nights and bivouac use with light weather protection
• Travel where quick-drying, low-maintenance sleeping gear is preferred

Key specifications

• Shape: mummy with anatomic hood and warmth collar
• Outer material: 100% recycled polyester with PFC-free Eco Finish
• Fill: single-layer synthetic Sensofiber made from 100% recycled polyester
• Overall length: 2200 mm
• Maximum width (shoulder): 800 mm
• Minimum width (foot): 500 mm
• Packed dimensions: approx. 400 × 200 mm (length × width)
• Two-way long side zip, dividable for connection
• Inner pocket and footbox included
• Fabric standard: bluesign®-compliant

How to use

Unpack the sleeping bag and allow it to loft before use to restore insulation properties. Use the anatomic hood and warmth collar to adjust heat retention around your head and shoulders. Open the two-way zip from either end to regulate ventilation or fully unzip to use as a blanket. Fasten the zip carefully to avoid fabric snags and, when needed, join with a compatible sleeping bag using the dividable zip. After use, air the bag to remove moisture, then compress into the included stuff sack only for transport — long-term storage should be loose to preserve loft.

Usage recommendations

For best thermal performance, use the sleeping bag with an insulated sleeping pad. In wet conditions, rely on the synthetic fill’s ability to retain insulating properties, but protect the bag from heavy rain using a tent or groundsheet. Clean according to the manufacturer’s instructions and repair small damages promptly to extend product life.