Experience the pinnacle of ultralight comfort and performance with the Spark -1C Ultralight Mummy Sleeping Bag. Whether you're embarking on a multi-day trek through rugged terrain or seeking refuge under the starlit sky, these sleeping bags are designed to enhance your outdoor adventures.
Everything about the Spark Ultralight has been engineered to deliver optimum warmth without the weight penalty. A mummy shape and ultra lightweight 10D nylon shell deliver a low bulk sleeping bag with a compact design and packed weight of just 536g.
Ultra-Dry Down 850+ fill power insulation gives you a highly compressible goose down with water-repellent treatment that protects from both external moisture and internal condensation. This helps retain loft and absorb less moisture when compared with untreated down and continues to insulate even in damp conditions. An adjustable hood and generous footbox round out the design to deliver optimum warmth and comfort.
The Spark -1C is crafted with premium materials and a streamlined design, ensuring unparalleled performance in any environment. Snug enough to maximize thermal efficiency, yet spacious for unrestricted movement during those epic hikes and treks.
Comes With: Ultra-Sil compression bag and storage cell
Fabric: 10-Denier Nylon shell and lining. 10-Denier Nylon waterproof-breathable hood and footbox
Insulation: Ultra-Dry Goose Down 850+ Loft
Shape: Relaxed Mummy
Zip Options: Left-side #3 YKK zipper
Features
850+ FILL Power, RDS-certified, Goose Down with Ultra Dry Down treatment for improved water resistance in damp conditions
10-Denier Nylon shell and lining. 10-Denier Nylon waterproof-breathable hood and footbox
Mummy Fit: Fitted cut with generous footbox and technical hood, to maximise thermal efficiency and minimise bulk and weight.
Primary zip - 1/2 length #5 with zip-plow and two sliders
Vertical chest baffles, horizontal baffles lower half and base with box wall baffles top half of bag and sewn through quilted construction lower half
Standard front draft collar for added warmth
QuiltLock System integrates with STS quilts
Temperature Range (ISO 23537-1)
Comfort 4°C | 39°F
Lower Limit: -1°C | 30°F
Sea to Summit
One of the most authentic and innovative outdoor brands of the modern era, Sea to Summit design and create durable, lightweight and compact gear allowing you to confidently explore wherever you want.