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Trek Down Sleeping Bag (-1°C,-9°C & -18°C)

The versatility of Free-Flow Zip system plus the comfort of the spacious cut makes the Trek a go-to choice for campers and long-distance travelers alike + View tech specs
  • Temp Rating
  • Size
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BEST USE: Camping, Overlanding, Van Life

PERFORMANCE: Cold climate

WEIGHT: 4lb 2.8oz | 1895g



Product Details
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Trek Down Sleeping Bag (-1°C,-9°C & -18°C)
Trek Down Sleeping Bag (-1°C,-9°C & -18°C)
Description || Trek Down Sleeping Bag (-1°C,-9°C & -18°C)


If you've ever wished for a less-constrictive sleeping bag that keeps you comfortable in a variety of cool-to-warm conditions, the Trek may become your go-to bag. The Free-Flow Zip system allows you to open the bag sequentially for ventilation up to the point where it is opened flat as a quilt - you can even secure the snaps around your shoulders, open the footbox zipper and 'wear' the Trek around camp. 650+ fillpower duck down with a non-PFC Ultra-Dry Down treatment keep you insulated in damper conditions. Slip an Aeros Pillow into the hood and enjoy a great night's sleep - wherever your travels take you.

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
    Camping, Overlanding, Van Life
  • Comes With
    Ultra-Sil™ Compression Bag & Storage Cell
  • Insulation
    RDS certified, 650+ PFC free Ultra-Dry Down
  • Shape
    Relaxed Mummy
  • Zip Options
    Free-Flow zipper system
-18°C Regular-18°C Long-9°C Regular-9°C Long-1°C Regular-1°C Long

Frequently Asked questions

What are the differences between the Trek and the Ascent?

The Trek has a broader cut and is intended for travel/camping/some backpacking. The Ascent is a more technical bag for ambitious backcountry use.

Can Treks be zipped together?

Yes - the unisex and Women's Trek can be coupled (Unisex Trek will zip to most STS Women's bags)

Is the Trek suitable for warmer weather?

Yes! The Free-Flow zipper system provides unparalleled ventilation and allows the bag to be opened flat as a quilt

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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