The Spark down sleeping bag from Sea to Summit has been designed for those focused on keeping their pack as light as possible without compromising sleep quality. The Pro version features Sea to Summit's Free-Flow Zip system and premium 950+ loft goose down - making this Sea to Summit's lightest bag without any trade off in features. The design includes a technical hood and a draft tube along the zipper to help trap heat. A breathable 10-denier liner enhances comfort, while the 10D shell fabric, treated with DWR (Durable Water Repellency), helps block wind and moisture. The dual-zip design and shoulder snaps means this bag can be worn like a cosy wrap around camp on those colder mornings.
Spark Pro Down Sleeping Bag Features
- 950+ loft goose down treated with Ultra-Dry Down treatment to prevent moisture absorption
- 100% of the down used has been independently certified to the Responsible Down Standard (RDS)
- Ultralight and breathable face fabric helps with moisture regulation
- Technical hood, anatomical footbox and ergonomic mummy shape for excellent warmth-to-weight ratio
- Zipper length specific for each use case: half-length for ultralight packability on the lighter bags, and full-length for layer management cold weather on the warmer bags
- Baffle construction specific for each use case: sewn through for lighter bags, and hybrid or box baffles for maximum warmth on warmer bags
- 10 denier polyester shell with a DWR (Durable Water Repellent) finish blocks wind and moisture
- 10 denier polyester liner provides soft next-to-skin comfort
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