The award-winning Nitestar Alpha is our best-selling sleeping bag range, packing all the best features for a comfortable night’s sleep. With an amazing warmth-to-weight ratio and brilliant compressibility, the Nitestar Alpha is the perfect sleeping bag for every adventure. It is also part of the Duke of Edinburgh’s Award Recommended Kit, making it ideal for your award expedition.
Key Features:
- Polair Hex Fabric: A strong, durable yet soft-touch 68D polyester shell fabric with an embossed hex grid finish.
- Polair Lining: Super soft and comfortable 190T brushed polyester microfibre lining that’s incredibly warm and soft to touch.
- Alpha Insulation: Lightweight 50/50 blend of polyester and siliconized hollow fibres that trap more air to increase warmth retention while maintaining compressibility. The siliconized coating reduces friction, prevents insulation clumping, and enhances water repellence.
- Offset Construction: Double-layer design offsets shell and lining stitching to reduce cold spots and increase warmth retention.
- Mummy Shaped Sleeping Bag: Tapers from shoulders to foot, reducing pack size and increasing thermal efficiency.
- 3D Hood: Anatomically shaped for greater comfort and reduced heat loss, with a convenient drawcord closure for flexible adjustment.
- Horizontal Stitching: Ensures even insulation distribution throughout the sleeping bag.
- Insulated Shoulder Baffle: Retains heat within the sleeping bag and features a drawcord closure for adjustable warmth.
- Zip Guard with Anti-Catch Piping: Prevents the zip from snagging, allowing easy opening and closing.
- Insulated Zip Baffle: Reduces cold spots by preventing heat escape along the zip.
- Auto-Lock Two-Way Zip: Seals in warmth, provides adjustable ventilation, and prevents accidental opening during the night.
- Woven Zip Puller: Enables quick and easy zip movement.
- Internal Pocket: Convenient storage for small items.
- Hanging Loops: Allows easy hanging for quick drying.
- ISO 23537-1:2022 Certified: Extensively tested to meet industry-standard temperature ratings.
Specifications:
- Season: 4 Season
- Weight: 2.25kg
- Shape: Mummy
- Zip Side: Left
- Suggested Usage: Min -9°C / Max 15°C
- Internal Length: 205cm
- Internal Chest Width: 83cm
- Internal Foot Width: 48cm
- External Chest Width: 85cm
- Max User Height: 190cm
- Fill Type: Insulite Alpha
- Comfort Temperature: -4°C
- Limit Temperature: -11°C
- Extreme Temperature: -31°C
- Tog Rating: 11.0
- DofE Recommended: Yes
Whether you’re embarking on a challenging expedition or enjoying a weekend camping trip, the Nitestar Alpha 450 ensures you stay warm, comfortable, and prepared for any adventure.









