Sea to Summit Circuit Down Sleeping Bag (-1°C / 30°F)

The Sea to Summit Circuit Down Sleeping Bag is made for everything from backpacking trips to weekends under the stars. The semi-tapered rectangular shape gives side sleepers more space, while 650+ fill power down keeps things warm without weighing you down. Open the wraparound zip for extra airflow or lay it flat as a quilt when the nights are milder.

Details:
- Comfort in all conditions Opens flat for airflow on warm nights or zips closed to lock in warmth when temperatures drop.
- Efficient packability Quality 650+ fillpower Ultra‑Dry Duck Down and lightweight fabrics allow the Circuit to pack down small into the supplied compression sack.
- Room to move Soft touch liner and wider, thermally-efficient shape enhance warmth and comfort, no matter which position you sleep in.
- Precise ventilation Wrap‑around zip lets you fully open the footbox for maximum venting and fine-tune airflow to regulate temperature.
- Lightweight breathability Premium 20D fabric offers perfect next-to-skin comfort night after night after night.
- Consistent insulation Hybrid box‑baffle construction prevents down migration, eliminating cold spots for even warmth.
- Easy zipping YKK #5 coil zipper with anti‑snag plough ensures smooth, jam‑free operation in all conditions for hassle‑free use.
- Draft protection Shaped collar and continuous down-filled draft tubes minimise heat loss and maximise retained warmth.
- Verified warmth ISO 23537 certification confirms dependable insulation performance for rated temperatures.
Internal pocket Zipped pocket stores essentials like your phone or head torch securely while keeping them insulated from the cold.
- Lower impact materials Constructed from bluesign APPROVED, 100% recycled fabrics designed to go the distance.

Technical Specifications: 
- Best Use
All outdoor activities
- Comes With
Ultra-Sil Compression Sack & Storage Cube
- Insulation
Ultra-Dry Duck Down 650+ Loft
- Material(s)
Recycled 20-Denier shell and lining.
- Shape
Semi-rectangular fit: Spacious and generous, a roomy fit for car camping and side sleepers

-1°C Regular
- Compressed Vol (ASTM Standard): 5.4L
- Compression Sack: 13L 40D Nylon
- Fill Weight: 411g
- Fits Up to Height: 185 cm
- Weight: 820g

-1°C Long
- Compressed Vol (ASTM Standard): 6L
- Compression Sack: 13L 40D Nylon
- Fill Weight: 469g
- Fits Up to Height: 198 cm
- Weight: 910g