Sea To Summit Spark SPIV Sleeping Bag

European seller Original product Fast delivery Ultra-light and technical, the Spark™ Series bags are designed to keep you as warm as possible while minimizing weight and packing size. - The Spark™ series includes everything: From an ultralight liner to a mid-winter expedition bag. While the end uses are very different, they reflect the design idea of making the bag as weather-adaptable as possible. - The secret to impressive performance is the combination of premium materials and careful design.. RDS 850+ Loft premium goose down, lightweight #3 YKK zips, high-performance 10D nylon shell and 7D lining fabrics create the foundation for superior performance. These materials are combined with a contoured design for effective insulation, and this design is then adapted for each model to best suit the use scenario. - Our ULTRA-DRY Down™ water-repellent treatment protects the down from external moisture. and condensation from inside the bag, virtually eliminating the negative impact of moisture on the fluff. All Sea to Summit down sleeping bags use Responsible Down Standard certified down. (RDS). ULTRADRY Down™ protection also makes the Spark™ an impressive bag for alpine skiing or adventure racing, where every gram counts and down has never been an option. Peculiarities: - Vertical partitions in the torso area. accommodates extra down and increases warmth around the interior, vertical baffles on the chest optimize the position of the down to prevent it from moving during use - The bottom of the bag uses a stitched horizontal divider to minimize weight. - ½ zipper with two sliders allows easy access and ventilation from the middle of the bag - Updated sizing provides extra shoulder and hip room while maintaining insulation effectiveness - The exhaust tube prevents heat loss through the zipper - The set includes a stand-up collar for the hood Specifications: - Type of insulation: Fluff - Fluff: RDS 90/10 Premium Goose Down - Textile: 10D nylon shell - Filling capacity: ULTRA-DRY Down® 850+ Loft - Filling weight: Usual: 300 g, Long: 345 g - The form: Contour mummy - Temperature rating: EN 4°c Comfort up to -2°C Below - The weight: Usual : 490 g, Length: 560 g Technology: Loft: - Loft is the volume for a given weight of down.. It is used to describe the quality of down, which is directly related to the insulating properties.. High loft down is warmer for a given weight than low loft down. A higher downstroke will fill a larger volume of space for a given weight.. As a result, less weight of down is required to fill each baffle in the sleeping bag.. This means a lighter sleeping bag.. The most common measure of loft is called Fill Power.. 850 Fill Power means one ounce of this down will rise and fill a volume of 850 in3. 850+ Loft Goose Down: - 850+ Fill Power (loft) Premium goose down is the finest quality down available for sleeping bags.. It provides the highest insulation for its weight and will last the longest.