Spark SpI Sleeping Bag: 40 Degree Down

Weighing only 12 ounces, the Sea to Summit Spark Spl Sleeping Bag is the ultimate choice for ultralight backpackers, adventure racers, touring bicyclers, and alpine climbers. Packed with 850+ down, this sleeping bag offers the perfect balance between warmth and weight, keeping you cozy even in temperatures as low as 45F. Thanks to Sea to Summit's Ultra-Dry Down treatment, the Spark Spl is also moisture-resistant, ensuring your comfort in any conditions.

The contoured mummy shape of the Spark Spl provides a snug fit for a comfortable night's sleep. The full hood wraps around your head, eliminating the risk of waking up with freezing ears. The 1/2-length zipper on the left maximizes insulation when the temperature drops. In colder conditions, the SpI can be used as an ultralight sleeping bag liner, providing additional warmth for high alpine treks or winter camping. Additionally, the Spark Spl compresses small, allowing you to pack it easily, even if you prefer to travel light.

Product Details:

• Versatile, compact, and lightweight performance sleeping bag
• Contoured mummy shape delivers comfort and efficient insulation
• Warm Ultra-Dry Down insulates even in wet conditions
• Light shell fabric compresses down small for efficient packing
• Vertical chest baffles prevent down migration to warm your core
• 1/2-length zipper allows easy access while keeping weight down
• Lightweight design allows use as a liner in colder conditions
• Sea to Summit focuses on comfortable and lightweight products

Material [face fabric] 10D nylon, [lining] 7D nylon

Insulation RDS 850+ Loft Premium Goose Ultra-Dry Down

Shape contoured mummy

Zipper 1/2-zipper

Max User Height [regular] 6ft, [long] 6ft 4in

Shoulder Circumference [regular] 59in, [long] 62in

Hip Circumference [regular] 51in, [long] 54in

Foot Circumference [regular] 35in, [long] 38in

Bag Length [regular] 6ft, [long] 6ft 6in

Pockets none

Pad Retainer no

Venting 2-way zipper

Fill Weight [regular] 6.3oz, [long] 7.2oz

Degree 40F

European Norm/ISO Comfort Rating 48ºF

European Norm/ISO Lower Limit Rating 40ºF

Storage Sack storage cell

Stuff Sack Ultra-Sil compression bag

Stuff Size 15 x 8in

Claimed Weight [regular] 12oz, [long] 13.6oz

Manufacturer Warranty lifetime