Sea To Summit Spark SPII Sleeping Bag

Ultra-light and technical, our Spark™ Series bags are designed to keep you as warm as possible while minimising packed weight and size. The Spark™ Series spans everything from an ultralight liner to an expedition weight mid-winter bag. While the end usage is very different, they reflect a design ethos of matching weather conditions to the lightest bag possible.

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.

Our ULTRA-DRY Down™ water-repellent treatment protects the down from external moisture and condensation from the inside of the bag, virtually eliminating the negative effects moisture has on down. All Sea to Summit Down Sleeping Bags use Responsible Down Standard (RDS) certified down. The ULTRADRY 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.


Features:

- 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
- Updated sizing provides extra room for both shoulders and hips while still maintaining insulation efficiency
- Draft tube prevents heat loss through the zipper
- Includes hood draft collar
- NOTE: This bag is not designed to pair with another


Specifications:

- Gender: Unisex
- Insulation Type: Down
- Down: RDS 90/10 Premium Goose Down
- Fabric: 10D Nylon Shell
- Fill Power: ULTRA-DRY Down® 850+ Loft
- Fill Weight: Regular: 300g, Long: 345g
- Shape: Contoured Mummy
- Temp Rating: EN 4°c Comfort to -2°c Lower
- Weight: Regular: 490g, Long: 560g


Technology:

Loft:
- Loft is the volume for a given weight of down. It is used to describe the quality of down, relating directly to the insulating performance. High loft down is warmer for a given weight than low loft down. Higher lofting down will fill a larger volume of space for a given weight. As a result, less down weight is required to fill each baffle in a sleeping bag. This translates to a lighter sleeping bag. The most common measure of loft is called Fill Power. 850 Fill Power implies that one ounce of this down will loft to fill a volume of 850in3.

850+ Loft Goose Down:
- 850+ Fill Power (Loft) Premium Goose Down is the very best quality down available for sleeping bags. It provides the highest insulation for its weight and will last the longest.

RDS:
- Sea to Summit is excited to announce that in 2016 all of our Sleeping Bags will use down that has been sourced and certified by the Responsible Down Standard (RDS).
- The RDS is a tool that is going to help shift the entire down and feather industry towards more humane animal rearing and handling practices. Overseen by the internationally lauded Textile exchange, the RDS requires independent, third party assessments of all aspects of animal rearing and handling throughout the entire supply chain process. By only using down that meets the audited requirements of the RDS we can have confidence that each phase of the collection process has been completed with the welfare and ethical treatment of waterfowl in mind.
- This means no live plucking and no force feeding, humane living conditions and proper animal handling, from the moment of hatching throughout the life cycle of the waterfowl, and through the entire down supply chain.
- In addition, The RDS will be central in helping to increase awareness about what might be happening to waterfowl as their down is harvested. We hope that you, like us, believe that the ethical treatment of animals is important, and can appreciate the importance of the RDS for achieving this in our industry.
- If you would like to find out more information about how the Responsible Down Standard is trying to improve animal welfare during down collection.

ULTRA-DRY Down:
- All Sea to Summit sleeping bags are sold with an International Down Feather Laboratory (IDFL) certificate that identifies the exact Fill Power of the down used. We guarantee our sleeping bags are filled with premium down that exceeds the stated Fill Power in accordance to the International Down Feather Bureau (IDFB) standard.

- Repels moisture
- Retains loft
- Dries faster
- Anti-bacterial and anti-microbial
- Prolongs the life of your sleeping bag

- In a world of technical brilliance, it is remarkable that the performance of certain natural products have not been surpassed. Despite advances in modern fibre technology, down is still the best insulator warmth for weight, and is also the most durable sleeping bag insulation.
- The problem with down is its vulnerability to water; moisture decreases the ability of the down to loft to its full potential and insulate, decreasing the warmth of your sleeping bag. Once down is damp or wet, it also takes a long time for it to dry out and effectively insulate again.
- With the introduction of water-repellent ULTRA-DRY Down™ we have virtually eliminated the negative effects that moisture has on down. The ULTRA-DRY Down™ water-repellent treatment protects the down from external moisture and internal condensation.
- ULTRA-DRY Down™ is a permanent* Nano-level water repellent polymer treatment applied to our high loft, high quality down. The Nano-thin treatment vastly improves our down’s reaction to water without effecting its weight or loft performance. ULTRA-DRY Down™ retains over 60% more loft and absorbs 30% less moisture when compared with untreated down. Sea to Summit sleeping bags dry out 60% faster than bags with untreated down.
- The Nano-level treatment also inhibits bacterial and microbial growth, which makes Sea to Summit sleeping bags more hygienic and improves their lifespan.
- Sea to Summit sleeping bags, using ULTRA-DRY Down™ in combination with our already formidable 2D- and 3D-NanoShell™ system give you the best chance of sleeping warm and dry, day in day out throughout the worst of conditions. With these technologies combined there is simply no reason to choose any other insulation or shell for your sleeping bag.

Find out the Sea to summit Spark SPII Sleeping Bag in stock and at the best price. Also have a look on our Sleeping bags sales and choose our best offers. Find the latest reductions and discover all our sales on Sleeping bags products at amazing discount prices! All this to ensure you get the cheapest deal every time at trekkinn.