Sleeping Bag Sea to Summit Trek -1C Down Regular Summer 2025
The Trek down sleeping bag brings the comfort of a tapered-rectangular mummy shape and the versatility of a dual-zip ventilation system to wherever your travels may take you. The Free Flow Zip System comprises of a full-length side zip and secondary foot box zip allow you to increase ventilation or open the Trek completely flat like a duvet, and the quality down will keep you warm and snug on chilly nights.
The Trek down sleeping bag brings the comfort of a tapered-rectangular mummy shape and the versatility of a dual-zip ventilation system to wherever your travels may take you. The Free Flow Zip System comprises of a full-length side zip and secondary foot box zip allow you to increase ventilation or open the Trek completely flat like a duvet, and the quality down will keep you warm and snug on chilly nights.
SKU: ASL041172-050201-ss2025
Temperature rating (ISO Lower Limit): –1 °C (30 °F)
Comfort temperature (women): 3 °C (37 °F)
Extreme: theoretical threshold, not recommended for real-world use, approximate for this model: –16 °C
Seasonality: 2-season
Weight: 1253 g (2 lb 12.2 oz)
Fill weight: 437 g
Maximum user height: 198 cm
Compressed volume: 8.8 L
Compression sack volume: 13 L
Insulation: 650+ Fill Power Ultra-Dry™ duck down
Shell and lining fabric: 20D recycled polyester with PFAS-free DWR coating
Shape: Tapered Rectangular
Zippers: Free-Flow Zip System
Detailed description
Temperature rating (ISO Lower Limit): –1 °C (30 °F)
Comfort temperature (women): 3 °C (37 °F)
Extreme: theoretical threshold, not recommended for real-world use, approximate for this model: –16 °C
Seasonality: 2-season
Weight: 1253 g (2 lb 12.2 oz)
Fill weight: 437 g
Maximum user height: 198 cm
Compressed volume: 8.8 L
Compression sack volume: 13 L
Insulation: 650+ Fill Power Ultra-Dry™ duck down
Shell and lining fabric: 20D recycled polyester with PFAS-free DWR coating
Shape: Tapered Rectangular
Zippers: Free-Flow Zip System
Technical Specifications