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.

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 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 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 designed to go the distance

Tech Specs

Weight
-1C|30F S: 770g
-1C|30F R: 820g
-1C|30F L: 910g
-9C|15F S: 1080g
-9C|15F R: 1160g
-9C|15F L: 1290g

Fill Weight
-1C|30F S: 384g
-1C|30F R: 411g
-1C|30F L: 469g
-9C|15F S: 664g
-9C|15F R: 715g
-9C|15F L: 814g

Stuff/Compression Sack Volume
-1C|30F S: 13L
-1C|30F R: 13L
-1C|30F L: 13L
-9C|15F S: 20L
-9C|15F R: 20L
-9C|15F L: 20L

Packed Dimensions
-1C|30F S: 15.5 x 22.5 x 41cm
-1C|30F R: 15.5 x 22.5 x 41cm
-1C|30F L: 15.5 x 22.5 x 41cm
-9C|15F S: 18 x 27.5 x 46cm
-9C|15F R: 18 x 27.5 x 46cm
-9C|15F L: 18 x 27.5 x 46cm

Recommended User Height
-1C|30F S: 170cm
-1C|30F R: 185cm
-1C|30F L: 198cm
-9C|15F S: 170cm
-9C|15F R: 185cm
-9C|15F L: 198cm

Internal Shoulder Circumference
-1C|30F S: 145cm
-1C|30F R: 145cm
-1C|30F L: 155cm
-9C|15F S: 145cm
-9C|15F R: 145cm
-9C|15F L: 155cm

Internal Hip Circumference
-1C|30F S: 140cm
-1C|30F R: 140cm
-1C|30F L: 150cm
-9C|15F S: 140cm
-9C|15F R: 140cm
-9C|15F L: 150cm

Internal Foot Circumference
-1C|30F S: 98cm
-1C|30F R: 102cm
-1C|30F L: 106cm
-9C|15F S: 98cm
-9C|15F R: 102cm
-9C|15F L: 106cm

Comfort Temp Rating
-1C|30F S: 2°C
-1C|30F R: 2°C
-1C|30F L: 2°C
-9C|15F S: -5°C
-9C|15F R: -5°C
-9C|15F L: -5°C

Lower Temp Rating
-1C|30F S: -1°C
-1C|30F R: -1°C
-1C|30F L: -1°C
-9C|15F S: -9°C
-9C|15F R: -9°C
-9C|15F L: -9°C

Extreme Temp Rating
-1C|30F S: -20°C
-1C|30F R: -20°C
-1C|30F L: -20°C
-9C|15F S: -32°C
-9C|15F R: -32°C
-9C|15F L: -32°C

Baffle Design
-1C|30F S: top is box-baffle, bottom is sew-through
-1C|30F R: top is box-baffle, bottom is sew-through
-1C|30F L: top is box-baffle, bottom is sew-through
-9C|15F S: box baffle
-9C|15F R: box baffle
-9C|15F L: box baffle

Zipper Configuration
Left Handed Full-Length YKK#5 with Zipper Plow

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

Certification
bluesign APPROVED, ISO 13537-1, RCS - 1114661, RDS - 883003