Sea to Summit Trek Down Sleeping Bag -9°C

• RDS-certified, 650+ fillpower duck down with a non-PFC Ultra-Dry Down treatment to stay drier in damp conditions
• Includes a recycled 20D polyester shell with a non-PFC DWR finish blocks wind and moisture, while the polyester liner provides pure comfort.
• Free-Flow Zip System offers great temperature regulation and multiple sleeping bag configurations
• Semi-rectangular fit is designed for spacious comfort when you're camping or traveling
• Sea to Summit Guarantee is offered for the Lifetime of this product
• Includes lightweight Ultra-Sil compression bag and storage cell

• Fits to: 185cm (Regular)
• Shoulder Width: 79cm (Regular)
• Foot Width: 65.5cm (Regular)
• Compression Sack: 20 Litres
• Compressed Volume: 10.6L
• Fill: ULTRA-DRY Duck Down 650+ Loft, RDS certified
• Fill Weight: 635g (Regular)
• Average Weight: 1436g (Regular)
• Outer Material: 20D recycled polyester
• Inner Material: 20D recycled polyester with a non-PFC DWR finish
• Temperature Rating: -3°C comfort rating woman / -9°C Lower comfort rating for men; Temperature rated in accordance with ISO 23537-1:2022

Technologies

ULTRA-DRY Down™: With the introduction of water-repellent ULTRA-DRY Down™ Seat to Summit have virtually eliminated the negative effects moisture has on down. The ULTRA-DRY Down™ water-repellent treatment protects the down from external moisture and condensation from inside the bag. It is a permanent (no loss of treatment effect has been seen in over 14 wash cycles) Nano-level water repellent polymer treatment applied to Sea to Summit high loft, high quality down. The Nano-thin treatment vastly improves the down's reaction to water without effecting its weight or loft performance. ULTRA-DRY Down™ retains over 60% more loft and absorbs 30% less moisture when compared with untreated down. Sea to Summit sleeping bags dry out 60% faster than bags with untreated down. The Nano-level treatment also inhibits bacterial and microbial growth, which makes Sea to Summit sleeping bags more hygienic and improves their lifespan.

Responsible Down Standard (RDS): The RDS is helping to shift the entire down and feather industry towards more humane animal rearing and handling practices. Overseen by the industry leading Textile Exchange, the RDS requires independent, third party assessments of all aspects of animal rearing and handling throughout the entire supply chain. By only using down that meets the audited requirements of the RDS we can have confidence that each phase of the collection process has been completed with the welfare and ethical treatment of waterfowl in mind.