Circuit Down Sleeping Bag
Category: Gear Sleeping Bags
Circuit Down Sleeping Bag
Adapt to any adventure. The Circuit’s semi-tapered-rectangular shape fits you and fits your travelling, camping and backpacking lifestyle. Its extra width allows you to sleep on your side, wrapped in 650+fillpower down and soft-touch fabrics. As the weather warms, the wraparound zipper lets you ventilate the bag from top to bottom, and even open it as a fully flat quilt. Sea to Summit design and quality, non-PFAS recycled materials and ISO-tested performance make this light, packable bag the perfect travel companion.
Tech Specs
Best Use
- Backpacking, Camping, Travel
Materials
- Shell: 100% Recycled Polyester
- Lining: 100% Recycled Polyester
- Insulation: FP650 Grey Duck Down 80/20 DWR RDS
- Compression Sack: 100% Recycled Nylon
- Storage Cell: 100% Recycled Nylon
Zipper Configuration
- Left Handed Full-Length YKK#5 with Zipper Plow
Insulation
- FP650GDD
Specifications by Temp Rating & Size
| Temp Rating & Size | Weight | Packed Weight | Dimension | Packed Size | Compressed Volume | Length | Recommended User Height | Fill Weight | Temp Rating (ISO Lower) | Temp Rating (ISO Comfort) |
|---|---|---|---|---|---|---|---|---|---|---|
| 30°F / Short | 770 g | 27.2 oz | 900 g | 31.7 oz | 192 x 72.5 cm | 75.6 x 28.5 in | 41 x 22.5 x 15.5 cm | 16.1 x 8.9 x 6.1 in | 5.1 L | 192cm | 75.6in | 170 cm | 5 ft 7 in in | 384 g | 13.5 oz | -1 °C | 30 °F | 2 °C | 36 °F |
| 30°F / Regular | 820 g | 28.9 oz | 950 g | 33.5 oz | 207 x 72.5 cm | 81.5 x 28.5 in | 41 x 22.5 x 15.5 cm | 16.1 x 8.9 x 6.1 in | 5.4 L | 207cm | 81.5in | 185 cm | 6 ft 1 in in | 411 g | 14.5 oz | -1 °C | 30 °F | 2 °C | 36 °F |
| 30°F / Regular Wide | 890 g | 31.4 oz | 1030 g | 36.3 oz | 207 x 82.5 cm | 81.5 x 32.5 in | 41 x 22.5 x 15.5 cm | 16.1 x 8.9 x 6.1 in | 5.9 L | 207cm | 81.5in | 185 cm | 6 ft 1 in in | 460 g | 16.2 oz | -1 °C | 30 °F | 2 °C | 36 °F |
| 30°F / Long | 910 g | 32.1 oz | 1040 g | 36.7 oz | 222 x 77.5 cm | 87.4 x 30.5 in | 41 x 22.5 x 15.5 cm | 16.1 x 8.9 x 6.1 in | 6 L | 222cm | 87.4in | 198 cm | 6 ft 6 in in | 469 g | 16.5 oz | -1 °C | 30 °F | 2 °C | 36 °F |
| 15°F / Short | 1080 g | 38.1 oz | 1250 g | 44.1 oz | 192 x 72.5 cm | 75.6 x 28.5 in | 46 x 27.5 x 18 cm | 18.1 x 10.8 x 7.1 in | 9 L | 192cm | 75.6in | 170 cm | 5 ft 7 in in | 664 g | 23.4 oz | -9 °C | 16 °F | -5 °C | 23 °F |
| 15°F / Regular | 1160 g | 40.9 oz | 1330 g | 46.9 oz | 207 x 72.5 cm | 81.5 x 28.5 in | 46 x 27.5 x 18 cm | 18.1 x 10.8 x 7.1 in | 9.7 L | 207cm | 81.5in | 185 cm | 6 ft 1 in in | 715 g | 25.2 oz | -9 °C | 16 °F | -5 °C | 23 °F |
| 15°F / Regular Wide | 1260 g | 44.4 oz | 1430 g | 50.4 oz | 207 x 82.5 cm | 81.5 x 32.5 in | 46 x 27.5 x 18 cm | 18.1 x 10.8 x 7.1 in | 10.5 L | 207cm | 81.5in | 185 cm | 6 ft 1 in in | 798 g | 28.1 oz | -9 °C | 16 °F | -5 °C | 23 °F |
| 15°F / Long | 1290 g | 45.5 oz | 1450 g | 51.1 oz | 222 x 77.5 cm | 87.4 x 30.5 in | 46 x 27.5 x 18 cm | 18.1 x 10.8 x 7.1 in | 10.8 L | 222cm | 87.4in | 198 cm | 6 ft 6 in in | 814 g | 28.7 oz | -9 °C | 16 °F | -5 °C | 23 °F |
Key Features
- 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 - Comfort-oriented, brushed liner maximise movement and maintain warmth all night
- Precise ventilation - Wrap‑around zip lets you fully open the footbox for maximum venting and fine-tune airflow to regulate temperature
- Lightweight breathability - Featherlight 20D polyester balances airflow for moisture management with proven durability for long-term use
- 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 - Zippered 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 are designed to go the distance
Available Options
Temp Rating
- 30°F
- 15°F
Size
- Short
- Regular
- Regular Wide
- Long
Before you pay
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When it ships
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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.
Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.
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Standard Shipping · United States: $0.00
Express Shipping · United States: $3.99
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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.
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