Sea to Summit Spark SpIV Sleeping Bag (Regular)
The Sea to Summit Spark™ Series is what you reach for when you need a high performance sleeping bag without the weight. The Spark™ Series spans everything from an ultralight liner to an expedition weight mid-winter bag. The Spark SpIV is the warmest bag of the Spark series with a EN comfort rating of -8°. This Sleeping bag can be used as a mid-winter bag on lightweight expeditions and adventure sports.
Sea to Summit Spark SpIV Sleeping Bag (Regular)
The Sea to Summit Spark™ Series is what you reach for when you need a high performance sleeping bag without the weight. The Spark™ Series spans everything from an ultralight liner to an expedition weight mid-winter bag. The Spark SpIV is the warmest bag of the Spark series with a EN comfort rating of -8°. This Sleeping bag can be used as a mid-winter bag on lightweight expeditions and adventure sports. The mixed baffling on this bag prevents the down filling from moving away while you sleep, eliminating cold spots. This sleeping bag also features a contoured mummy shape and is made from premium RDS certified goose down for efficient insulation.
Spark Sleeping Bag Features:
- Contoured mummy shape for efficient insulation
- Mixed baffling - vertical upper & horizontal lower
- Extremely lightweight and compact
- Water repellent polymer treatment applied
- Expedition mummy bag sizing provides extra space for layered clothing or extra wriggle room
- Includes lightweight Ultra-Sil™ Nano compression bag for compact storage
- RDS Certified Down
The EN13537 is a European standard for sleeping bags that provides three temperature levels to help guide you when choosing a bag. Comfort - The temperature at which a standard woman can expect to sleep comfortably in a relaxed position. If you are female or consider yourself a cold sleeper, use this rating to decide the coldest temperature the sleeping bag is suitable for. Lower Limit The temperature at which a standard man can sleep for eight hours in a curled position without waking. If you consider yourself a warm sleeper, use this rating to decide the coldest temperature the sleeping bag is suitable for. Extreme This is a survival only rating for a standard woman. Between the lower limit and the extreme rating a strong sensation of cold must be expected and there is a risk of health damage due to hypothermia. This is an extreme survival rating only; we do not recommend you rely on this rating for normal use.
850+ Fill Power indicates that 1 oz of down will re-expand to over 850 cubic inches after compression. Higher loft means that less down can be used to achieve the same temperature rating - important for performance sleeping bags. The loft and down quality/composition are independently tested by the International Down and Feather Laboratory (IDFL) - a copy of the certification is supplied with every Sea to Summit sleeping bag.
ULTRA-DRY Down™ is a permanent nano-level water repellent polymer treatment applied to our down which protects it from external moisture and condensation from inside the bag virtually eliminating the negative effects moisture has on down.
The secret to the impressive performance is a combination of premium materials and careful design. The RDS 850+ Loft premium goose down, light-gauge #3 YKK zip and high performance 10D Nylon shell and 7D lining fabrics set the stage for superior performance. These materials are combined with a contoured mummy design for efficient insulation, and that mummy design is then tweaked for each model to best fit the use scenario. The ULTRA-DRY Down™ protection also makes the Spark™ an impressive hard-alpine or adventure racing bag, where every gram is counted and down has never been a viable option.
- Ultralight 7D fabrics for minimal weight and packed size
- RDS 850+ Loft Premium Goose ULTRA-DRY Down™ for maximum insulation value
- Vertical box baffles in the torso area accommodates extra down and boosts warmth around the core, vertical baffles on chest optimises positions of down to prevent it moving during use
- Lower part of the bag uses a sewn through horizontal baffle construction to minimise weight
- ½ zip with two sliders aids access and allows ventilation from mid-section of bag
- Draft tube prevents heat loss through the zipper
- Includes hood draft collar
- Shell: 100% Nylon, Lining: 100% Nylon, Primary Filling Material: GOOSE DOWN (Min. 90% Down), Stuffsack: 100% Nylon excluding Trims
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Sea To Summit
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Inspired by epic adventures at every altitude, the Sea to Summit brand is all about the pure joys of fresh air, fresh challenges and fresh thinking. This award-winning global brand has created a culture of design perfectionism to develop ingenious functionally beautiful products with a “no worries" Australian attitude. Their ethos to equip and inspire continues to drive product research & development towards delivering lighter, better made, better performing gear to outdoor enthusiasts.
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