Vango Mantis 400 Sleeping Bag
Shipping Information
Shipping Information
Free UK Delivery*
Standard service usually takes 1-3 working days and is sent via Royal Mail; Service depends on location, weight and availability. All shipments have a tracking number and can be tracked via the carrier's website; The tracking number for your order is sent via email with your dispatch confirmation email. No signature is required on delivery but all deliveries are either tracked or provide delivery confirmation.
* Some highlands and islands postcodes incur an additional surcharge when the total weight of the order exceeds 2kg.
Get it Fast!
We also offer delivery upgrades for anyone requiring their order to arrive a little faster. Next day delivery options available at checkout.
Postage quotes
The easiest way to see the exact cost of delivery is by adding all items that you wish to purchase to your cart. You can then use the Shipping Estimator to tell you the exact cost, this includes all international orders.
Same Day Dispatch
We guarantee dispatch of all orders placed before 14:00 on the very same day, Monday to Friday.
Description
Description
Vango Mantis 400 Sleeping Bag - Lightweight 4 Season Mummy Sleeping Bag
Advanced lightweight 4-season sleeping bag with ThermX insulation technology for cold-weather camping, trekking and expedition use.

Key Features
- ThermX Insulation Design - Proprietary construction targets warmth where it is needed most for an improved warmth-to-weight ratio
- Thermal Reverb Technology - Aluminised fabric layers reflect body heat back towards the user to improve warmth retention
- Thermal Embrace Lining - Elasticated lining gently contours closer to the body to reduce cold spots without restricting movement
- Lightweight 4 Season Performance - Designed for cold-weather camping and expedition use with a low overall pack weight
- Recycled Ripstop Shell Fabric - Durable 40D recycled nylon shell is lightweight, breathable and water resistant
- Soft-Touch Ripstop Lining - Tear-resistant recycled nylon lining improves comfort and compressibility
- Ergonomic Omega Shaping - Tailored mummy design improves thermal efficiency around the head and shoulders
- Adjustable Shoulder Baffle - Ergonomic insulated shoulder baffle helps retain warmth inside the sleeping bag
- 2 Panel 3D Hood - Shaped hood design minimises heat loss from the head during cold nights
- Full Length Two-Way Auto-Lock Zip - Allows adjustable ventilation while helping prevent accidental opening during sleep
- Anti-Snag Zip Guard - Anti-catch piping helps prevent the zip snagging on the lining fabric
- Insulated Zip Baffle - Reduces cold spots and improves thermal efficiency along the zip area
- Redesigned Ergonomic Footbox - Improves comfort and freedom of movement while reducing heat loss
- Internal Storage Pocket - Convenient storage for small essentials and valuables
- Compression Stuff Sack Included - 3-strap compression sack reduces pack size for transport and storage
- ISO Temperature Tested - Certified to ISO 23537-1:2022 industry temperature testing standards
Product Overview
The Vango Mantis 400 is an advanced lightweight 4-season sleeping bag engineered for users who require dependable cold-weather performance without excessive pack weight. Featuring Vango’s innovative ThermX design, the sleeping bag combines targeted insulation placement and thermal efficiency technologies to maximise warmth while maintaining a compact and highly compressible packed size.
The durable Polair Eco ripstop shell fabric provides a lightweight balance of breathability, water resistance and durability, while the soft-touch recycled lining improves comfort and compressibility for easier transport during trekking, backpacking and expedition use.
Thermal Reverb technology uses strategically positioned aluminised fabric layers to reflect heat back towards the user, improving thermal retention in lower temperatures. Thermal Embrace elasticated lining technology gently contours around the body to reduce internal air gaps and minimise cold spots without restricting movement during sleep.
An ergonomically shaped Omega mummy profile improves warmth retention around the head and shoulders, while the insulated shoulder baffle, 3D hood and redesigned ergonomic footbox further enhance thermal efficiency and overnight comfort. The full-length two-way auto-lock zip allows adjustable ventilation and easy access while helping prevent heat loss during colder conditions.
Designed for demanding outdoor environments, the Vango Mantis 400 is well suited to winter camping, trekking, expedition travel and cold-weather outdoor adventures where warmth, packability and performance are essential.
Intended Uses
- Winter Camping - Designed for reliable warmth during cold-weather camping trips
- Trekking and Backpacking - Lightweight compressible design suitable for multi-day outdoor travel
- Expedition Use - Advanced thermal performance for demanding outdoor environments
- 4 Season Outdoor Use - Suitable for year-round camping in varied weather conditions
- Wild Camping - Compact and packable sleeping solution for remote overnight adventures
- Adventure Travel - Practical sleeping bag for touring, expeditions and outdoor exploration
Specifications
| Brand | Vango |
| Product Type | 4 season mummy sleeping bag |
| Season Rating | 4 Season |
| Weight | 1.44kg |
| Shape | Mummy |
| Zip Side | Left |
| Fill Type | 4T Eco - Recycled Synthetic Filling |
| Suggested Usage Min | -6°C |
| Suggested Usage Max | 15°C |
| Limit Temperature | -6°C |
| Extreme Temperature | -20°C |
| Internal Length | 205cm |
| Internal Chest Width | 78cm |
| Internal Foot Width | 48cm |
| External Chest Width | 80cm |
| Maximum User Height | 190cm |
| Certification | ISO 23537-1:2022 Certified |
Payment & Security
Accepted payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.














