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Spark Pro Down Sleeping Bag (-1°C & -9°C)

Spark Pro Down Sleeping Bag


Spark Pro Down Sleeping Bag (-1°C & -9°C)

Lightweight yet incredibly versatile, the Spark Pro brings enhanced comfort with the Free Flow Zip System+ View tech specs
  • Temp Rating
  • Size
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BEST USE: Ultralight Backpacking


WEIGHT: 1lb 11.7oz | 784g



Product Details
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-1°C || Spark Pro Down Sleeping Bag
Spark Pro Down Sleeping Bag (-1°C & -9°C)
Description || Spark Pro Down Sleeping Bag


The Spark Pro has been optimized for comfort, versatility and light weight. Our highest-lofting down - 950+ fillpower RDS-certified goose down with a non-PFC Ultra-Dry Down treatment - is wrapped in extremely breathable 10D fabrics. The Free-Flow Zip system ensures maximum ventilation and the flexibility to open the bag flat as a quilt. Zip a Spark Pro to a Women's Spark and share the comfort with your companion.

Design Details

Free flow section logo
Customize your comfort with precision

Customize your comfort with precision

Unzip, unfold, and effortlessly tweak your airflow and sleeping positions as you adapt to changing temperatures and preferences

Stay in sync with your surroundings

Stay in sync with your surroundings

Seamlessly transition from a cocoon of warmth to an open vista of fresh air. Transform your sleeping bag to a quilt, two bags coupled together or back to a standard setup

Move around the campsite with ease

Move around the campsite with ease

With Free Flow, your sleeping bag becomes your trusted companion as you relax, wander about and bask in the great outdoors. It's more than a sleeping bag—it's an extension of your adventure

Technical Features


Tech specs

  • Best Use
    Ultralight Backpacking
  • Comes With
    Ultra-Sil™ Compression Bag & Storage Cell
  • Insulation
    RDS certified, 950+ PFC free Ultra-Dry Down
  • Shape
  • Zip Options
    Free-Flow zipper system
-9°C Regular-9°C Long-1°C Regular-1°C Long

Frequently Asked questions

Can two Spark Pros be zipped together?

The Spark Pro is only available with a left zip, but can be zipped to other STS Women's sleeping bags

Is the Spark Pro available as a women's model?

We don't currently offer a women's-specific Spark Pro. The unisex model works for female end-users (who should use the Comfort rating for orientation)

What's the difference between the Spark and the Spark Pro?

The Spark Pro has a footbox zipper and a short right-side zipper (great ventilation, open-flat as a quilt, sit up with arms extended from the bag)

Shipping & Returns

Free  express delivery in Australia for orders over $49.99*.

For all other orders under $49.99, we charge a flat fee of $10.00 for delivery in Australia. 

For more details, check out our Shipping Policy.

We do not ship to an address outside of Australia.  

If you are not entirely satisfied with your order, you may be entitled to a refund of the purchase price of the Product. For more details, please check out our Refund Policy.

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