SEA TO SUMMIT Circuit Down Sleeping Bag -9C|15F Long Sleeping bag

The Circuit sleeping bag from Sea to Summit is designed for travellers, hikers and backpackers looking for a versatile companion for trips in a range of conditions. Its semi-rectangular cut offers plenty of room for comfortable side sleeping, while the 650+ fill power duck down insulation provides reliable warmth.

The Circuit 15°F in the Long version is intended for users up to 198 cm tall and, with a weight of 1,290 g and a compressed volume of 10.8 L, is a practical solution for those who need a high-performance sleeping bag without unnecessary bulk. All materials are made from 100% recycled fabrics with bluesign APPROVED certification, so your kit lasts longer and is made with the environment in mind.

1. Flexible ventilation for any temperature
   The full-length zip allows you to fully open the footbox or the entire bag into a flat quilt on warm nights, while when temperatures drop you simply zip it up and the shaped collar together with continuous down side baffles helps prevent heat loss—so you can fine-tune comfort without compromise.
2. Even warmth without cold spots
   The hybrid box-baffle construction prevents the down from shifting inside the shell, eliminating cold spots and ensuring even heat distribution throughout the night, while ISO 23537 certification independently verifies the stated thermal performance with a comfort temperature of -5 °C and a lower limit of -9 °C.

• 650+ fill power duck down 80/20
• ISO 23537 certification for verified performance
• YKK #5 full-length anti-snag zip
• Opens into a flat quilt
• Brushed inner lining for comfort
• Hybrid baffles prevent down migration
• Internal zipped pocket for small items
• 100% recycled materials, bluesign certified
• Supplied with both a compression sack and a storage sack
• Lightweight 20D polyester shell for breathability
• Suitable for users up to 198 cm tall

Specifications:

Weight: 1,290 g
Weight with sack: 1,450 g
Volume (compressed): 10.8 L
Sleeping bag dimensions: 222 × 77.5 cm
Dimensions in compression sack: 46 × 27.5 × 18 cm
ISO Comfort temperature rating: -5 °C / 23 °F
ISO Lower temperature rating: -9 °C / 16 °F
Down fill weight: 814 g
Shell: 100% recycled polyester
Lining: 100% recycled polyester
Insulation: duck down FP650 80/20, DWR, RDS
Compression sack: 100% recycled nylon
Storage sack: 100% recycled nylon
Zip: YKK #5, left-hand, full length
Recommended user height: up to 198 cm (6 ft 6 in)
Size: Long

Temperatures: