- Contoured mummy design for efficient insulation, with updated sizing that provides extra room for shoulders and hips
- RDS 850+ Loft ULTRA-DRY Down for superior insulating power, moisture resistance and compressibility (Responsible Down Standard certified)
- 10D Nylon shell and 7D lining fabrics
- Vertical chest baffles prevent down migration and cold spots
- Horizontal sewn-through baffles in the lower half of the bag minimise weight
- Half zip with two sliders to aid access and allow ventilation from bag's mid-section
- Draft tube and draft collar prevents heat loss through the zipper and hood
- Includes storage cell and lightweight Ultra-Sil compression bag for compact storage.
Sea to Summit's new ultralight Spark SPI sleeping bag is designed to keep you as warm as possible while minimising packed weight and size. Great for adventure when you need a high performance sleeping bag but don’t want to be weighed down by one, Sea to Summit’s Spark Series Bags are what you reach for.
The Spark I temperature rating is 9°C Comfort, 5°C Lower limit (-9°C Extreme). Regular weighs just 340g and long 385g and packs down to approx 25cm x 13cm diameter.
The Spark SPI combines ULTRA-DRY Down™ 850+ loft premium goose down, light-gauge #3 YKK® zip, high-performance 10D nylon shell and 7D lining fabrics and a contoured mummy shape for efficient insulation and superior performance.
Other features include a hybrid construction with box wall baffles over the torso for core warmth and a sewn through construction at the legs to shave weight, a half-length zip and a draft tube and a full hood to keep in your warmth. A 3-season bag ideal for mid-summer fast hikes or adventure racing.
- Colour: Light Grey / Yellow
- Shape: Mummy
- Length: Regular or Long
- Weight: Reg 340g, Long 385g
- Circumference Dimensions: Reg chest 150cm x hip 130cm x foot 88cm, Long chest 158cm x hip 138cm x foot 94cm
- User Height: Reg up to 183cm, Long up to 198cm
- Insulation Type: RDS 850+ Loft ULTRA-DRY
- Temperature Ratings: 9°C Comfort, 5°C Lower limit, -9°C Extreme
