Circuit

Designed for travellers, campers, and backpackers who want a versatile, packable sleeping bag that adapts to any night outdoors, the Sea to Summit Circuit Down Sleeping Bag wraps you in 650+ fillpower Ultra-Dry Duck Down and soft-touch fabrics in a wider, semi-tapered rectangular shape that suits every sleeping position. A wraparound zip opens the bag fully flat as a quilt on warm nights and zips closed for maximum warmth when temperatures drop, while ISO 23537-certified insulation performance means you can trust the temperature ratings before you head out. Lightweight, packable, and constructed from bluesign APPROVED 100% recycled fabrics for a lower environmental impact.

Circuit Down Sleeping Bag Features

• 650+ fillpower Ultra-Dry Duck Down for efficient, packable warmth in a lightweight package
  
• Wider semi-tapered rectangular shape for comfortable side sleeping and freedom of movement
  
• Wraparound zip opens fully flat as a quilt
  
• Hybrid box-baffle construction prevents down migration
  
• Shaped collar and continuous down-filled draft tubes to minimise heat loss at the neck and shoulders
  
• Premium 20D soft-touch fabric provides comfortable next-to-skin
  
• Anti-snag zip for smooth, reliable operation in all conditions
  
• Internal zippered pocket for secure, insulated storage of a phone or head torch
• Packs into supplied compression sack

TECH SPECS

• 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