Vango’s most recent lightweight sleeping bag innovation, the Mantis 400, features their distinctive ThermX design. ThermX enhances the warmth-to-weight ratio by concentrating warmth where it is needed through a combination of proprietary construction and insulation technology. This allows for a smaller, more compressible pack size without sacrificing performance. The sturdy Polair Eco ripstop fabric reduces weight while maintaining breathability and water resistance. For added comfort, the updated Arrow Foot 2.0 design improves flexibility at your feet, while Thermal Reverb and Thermal Embrace ensure warmth retention.
Key Features:
- Recycled 40 denier ripstop nylon shell fabric: Durable, water-resistant, lightweight, and highly breathable.
- Recycled 40 denier ripstop nylon lining fabric: Soft-touch, tear-resistant, and highly compressible to reduce pack size.
- ThermX design: Combines proprietary construction and insulation technology to target heat where needed most, increasing the warmth-to-weight ratio.
- Thermal Reverb: Strategically placed non-woven aluminised fabric layers reflect heat back to the user for increased warmth and heat retention.
- Thermal Embrace: Elasticated threads in the lining gently cinch the sleeping bag closer to your body, reducing cold spots without restricting movement.
- Insulated Adjustable Shoulder Baffle: Retains heat within the sleeping bag.
- 2 Panel 3D hood: Shaped to prevent heat loss from the head for maximum warmth and comfort.
- Full Length Two-Way Auto-Lock Zip with Zip Guard: Seals in warmth or provides ventilation, usable from inside the bag. Anti-catch piping prevents the zip from snagging on the lining.
- Omega shaping: Ergonomically tailored around the head and shoulders, with zips and seams placed in the lower section of the bag to retain warmth more effectively.
- Insulated Zip Baffle: Reduces cold spots and retains heat within the sleeping bag.
- Internal Pocket: Convenient storage for small items.
- Redesigned ergonomic footbox: Increases comfort while minimizing heat loss.
- 3-Strap compression stuffsack: Reduces overall pack weight without compromising compressibility.
- Temperature Ratings Independently Measured: In accordance with EN 23537-1:2022, extensively tested for accurate temperature rating standards.
Temperature Ratings:
- Extreme: -20°C
- Limit: -6°C
- Suggested minimum usage: -6°C
- Suggested maximum usage: 15°C
Dimensions and Specifications:
- Max user height: 190cm
- Internal Length: 205cm
- Internal foot width: 48cm
- Internal chest width: 78cm
- External chest width: 80cm
- Shape: Mummy
- Colour: Harissa
- Pack Size: 29.0 x ø20.0cm
- Weight: 1.44kg
Additional Details:
- Fill Type: 4T Eco – Recycled Synthetic Filling
- Performance: 4 Season
- Zip Side: Left
- Product Segment: Earth











