Circuit Down Sleeping Bag (-1°C & -9°C)

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 zip 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. Light and compact, the Trek might just become your favourite trekking / backpacking / travel / camping / down sleeping bag. 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 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.