Sea to Summit Circuit 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 - 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