Spark Sleeping Bag - SPI

Spark Sleeping Bag – SPI

Using the warmth of 850+ loft 90/10 Premium goose down, the amazing moisture protection of ULTRADRY Down™, and a micro-weight 10D Nylon shell and 15D lining, we have created one of the best warmth-for-weight minimalist sleeping bags available.

The Spark is an ultra-light bag with many possible uses. Its balance of size, weight and warmth make it an excellent summer sleeping bag, especially for weight and space conscious cycle tourers and ultralight fastpackers. It also works well as a liner bag, slipping inside another sleeping bag to add one or two seasons to its rating.

The Spark compresses so small, we had to reengineer our compression-sacks to make one that reduced sufficiently. The ULTRA-DRY Down™ protection makes the Spark an impressive hard-alpine or adventure racing sleeping bag, where down has never before been a viable option, and weight is simply not tolerated.

The secrets of the Spark’s warmth-to-weight are in the premium quality down, the half length light-gauge #3 YKK® zip and high performance microweight shell and liner fabrics. The Spark is designed as a close-fitting mummy bag. The full hood, footbox and short zip maximise fit and warmth while keeping weight and bulk to a minimum.

The Spark I is constructed with sewn-through transverse baffles. The Spark II is a hybrid construction with box wall baffles placed over the torso to boost warmth around your core and a sewn-through construction at the legs. A draft tube is sewn over the zip to reduce cold spots in the Spark II and III models. The Spark III is constructed entirely from box wall baffles including the footbox for even heat retention. The head and neck baffles have been enlarged to trap vital warmth and achieve a lower limit EN rating of -4°C.

    sp1 adventure race down bag ultralight mummy

    Clear
      • Contoured mummy shape for maximum warmth
      • 10D UL Nylon shell
      • ULTRA-DRY Down™ 850+ Loft – 90/10 Premium Goose Down
      • Sewn through lateral baffles for optimal weight/bulk/warmth ratio, combined with a 55/45 fill ratio
      • Contoured hood with draw cord and a tapered foot box
      • 1/3 length YKK #3 side zip
      • Includes light weight Ultra-Sil® compression bag and storage cell/laundry bag

     

    Size variation
    Width (shoulders)
    Recommended User Height
    Volume Compressed
    Fill Weight
    Total weight
    Regular
    ø146 CM
    1.55 L
    180 G
    348 G
    Long
    ø152 CM
     
    200 G
    390 G

    Sea to Summit Sleeping Bags - Spark

    Sea to Summit Sleeping Bags - Spark
    Sea to Summit Sleeping Bags - Spark

    TECHNICAL FEATURES

    UL 10 Denier Nylon

    UL 10 Denier Nylon

    Using the warmth of 850+ loft 90/10 Premium goose down, the amazing moisture protection of ULTRADRY Down™, and a micro-weight 10D Nylon shell and 15D lining, we have created one of the best warmth-for-weight minimalist sleeping bags available. The Spark is an ultra-light bag with many possible uses. Its balance of size, weight and warmth […]
    UL 15 Denier Nylon

    UL 15 Denier Nylon

    Using the warmth of 850+ loft 90/10 Premium goose down, the amazing moisture protection of ULTRADRY Down™, and a micro-weight 10D Nylon shell and 15D lining, we have created one of the best warmth-for-weight minimalist sleeping bags available. The Spark is an ultra-light bag with many possible uses. Its balance of size, weight and warmth […]
    EN13537 Temperature Rating System

    EN13537 Temperature Rating System

    Using the warmth of 850+ loft 90/10 Premium goose down, the amazing moisture protection of ULTRADRY Down™, and a micro-weight 10D Nylon shell and 15D lining, we have created one of the best warmth-for-weight minimalist sleeping bags available. The Spark is an ultra-light bag with many possible uses. Its balance of size, weight and warmth […]
    3D Nanoshell

    3D Nanoshell

    Using the warmth of 850+ loft 90/10 Premium goose down, the amazing moisture protection of ULTRADRY Down™, and a micro-weight 10D Nylon shell and 15D lining, we have created one of the best warmth-for-weight minimalist sleeping bags available. The Spark is an ultra-light bag with many possible uses. Its balance of size, weight and warmth […]
    Differential cut shell

    Differential cut shell

    Using the warmth of 850+ loft 90/10 Premium goose down, the amazing moisture protection of ULTRADRY Down™, and a micro-weight 10D Nylon shell and 15D lining, we have created one of the best warmth-for-weight minimalist sleeping bags available. The Spark is an ultra-light bag with many possible uses. Its balance of size, weight and warmth […]
    Down loft, fill power

    Down loft, fill power

    Using the warmth of 850+ loft 90/10 Premium goose down, the amazing moisture protection of ULTRADRY Down™, and a micro-weight 10D Nylon shell and 15D lining, we have created one of the best warmth-for-weight minimalist sleeping bags available. The Spark is an ultra-light bag with many possible uses. Its balance of size, weight and warmth […]
    Responsible Down Standards

    Responsible Down Standards

    Using the warmth of 850+ loft 90/10 Premium goose down, the amazing moisture protection of ULTRADRY Down™, and a micro-weight 10D Nylon shell and 15D lining, we have created one of the best warmth-for-weight minimalist sleeping bags available. The Spark is an ultra-light bag with many possible uses. Its balance of size, weight and warmth […]
    Ultra-Dry Down™

    Ultra-Dry Down™

    Using the warmth of 850+ loft 90/10 Premium goose down, the amazing moisture protection of ULTRADRY Down™, and a micro-weight 10D Nylon shell and 15D lining, we have created one of the best warmth-for-weight minimalist sleeping bags available. The Spark is an ultra-light bag with many possible uses. Its balance of size, weight and warmth […]