Ultra-light and technical, the new Circuit Series bags by Sea To Summit are designed to keep you as warm as possible while minimising packed weight and size.
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.
ULTRA-DRY Down™ water-repellent treatment protects the down from external moisture and condensation from the inside of the bag, virtually eliminating the negative effects moisture has on down. All Sea to Summit Down Sleeping Bags use Responsible Down Standard (RDS) certified down. The ULTRADRY Down™ protection also makes the Circuit™ an impressive hard-alpine or adventure racing bag, where every gram is counted and down has never been a viable option.
Product 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
Insulation: Non-PFAS, RDS certified 650+ fillpower Ultra Dry DownShape: Semi-tapered-rectangularZip Options: Left Handed Full-Length YKK#5 with Zipper PlowCertification: bluesign APPROVED, ISO 13537-1, RCS - 1114661, RDS - 883003
Material
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
Packed dimensions
-1C|30F R: 15.5 x 22.5 x 41cm
-1C|30F L: 15.5 x 22.5 x 41cm
Weight
-1C|30F R: 820g
-1C|30F L: 910g
Baffle design
-1C|30F R: top is box-baffle, bottom is sew-through
-1C|30F L: top is box-baffle, bottom is sew-through
Comfort temp rating (°C)
-1C|30F R: 2°C
-1C|30F L: 2°C
Extreme temp rating (°C)
-1C|30F R: -20°C
-1C|30F L: -20°C
Fill weight (g)
-1C|30F R: 411g
-1C|30F L: 469g
Internal foot circumference (cm)
-1C|30F R: 102cm
-1C|30F L: 106cm
Internal hip circumference (cm)
-1C|30F R: 140cm
-1C|30F L: 150cm
Internal shoulder circumference (cm)
-1C|30F R: 145cm
-1C|30F L: 155cm
Lower temp rating (°C)
-1C|30F R: -1°C
-1C|30F L: -1°C
Recommended user height
-1C|30F R: 185cm
-1C|30F L: 198cm
Stuff/compression sack volume
-1C|30F R: 13L
-1C|30F L: 13L
About 650+ LOFT ULTRA-DRY DOWN
650+ Fill Power indicates that one ounce (30g) of down will re-expand to over 650 cubic inches after compression. The higher the Fill Power, the more the down will insulate for a given weight. This means that less down can be used to achieve the same temperature rating. 650+ goose down provides a good level of insulation for camping and travel use.
Every Sea to Summit down sleeping bag comes with a test report from the International Down and Feather Laboratory IDFL confirming the down loft and quality. All of our down is RDS certified responsibly sourced, and hydrophobically treated with a non-PFAS Ultra-Dry Down finish.
About Responsible Down Standard (RDS)
100% of the down used in Sea To Summit sleeping bags and quilts is independently certified to the Responsible Down Standard (RDS). The RDS certifies down against animal welfare requirements and tracks it from the source to the final product. The purchase of RDS certified products demonstrates demand for better animal welfare practices in the down and feather supply chain. Sea To Summit is certified to the RDS.
About Non-PFAS
Sea To Summit sleeping bag fabrics and insulation are made without PFAS compounds. The non-PFAS DWR finish on the shell helps prevent the insulation from becoming damp if the bag comes into contact with moisture, such as tent wall condensation.
Ultra-Dry Down is a non-PFAS hydrophobic treatment that absorbs less moisture and dries more quickly. It does not affect the 'breathability' or the lifespan of the down and lasts through at least 20 washings. The down used in our sleeping bags is responsibly sourced. Sea To Summit Dry Bags, Stuff Sacks and Compression Bags use a non-PFAS Durable Water Repellent finish to help shed water.
These items are now in stock and ready to ship immediately. Ultra fast shipping service, get it yesterday!The Corps Shop is an Authorised Distributor of Sea to Summit® products and equipment. Yes, we will combine shipping on multiple purchases.Yes, we ship to PO Box, Parcel Locker, APO, FPO and AFPO AddressesBe sure to add me to your favourites list!