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Thylacine 20ºF

Down Sleeping Bag


Winner of Outside Magazine’s Gear of the Year award, the Thylacine is the most versatile sleeping bag, outperforming every other in its category. The Thylacine 20ºF down sleeping bag gives campers complete control over warmth and fit with Variable Warmth Technology™ and CustomFit™ adjustments, keeping you warm in variable backcountry climates.

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Tech Specs
FAQ & Care

Gear of the Year

The award-winning Thylacine sleeping bag has been recognized as one of the most technically advanced sleep systems on the market, offering complete customizable versatility and adaptability, for a variety of distinct environments. Read more in Outside Magazine’s Gear of the Year award profile.

Water-repellent Downtek™ Insulation

The Thylacine 20ºF features Downtek™, a responsibly sourced, water repellent down. The down is treated with PFC-free bluesign® chemistry to repel water. When exposed to moisture, your loft remains lifted to keep you warm.

Tailored warmth and super strong

Wide and roomy, or slim and snug, CustomFit™ adjustments allow you to cinch tight to eliminate cold spots for maximum thermal efficiency. Our Pertex™ Quantum GL fabric is durable for the backcountry, but silky-soft to the touch. Windproof and DWR treated, moisture and dirt roll right off, the Thylacine 20ºF is excellent for nights in the backcountry.

Modularity for cold-weather adventures

The Thylacine 20ºF two-part system sleeping bag features Variable Warmth Technology™ allowing sleepers to adjust warmth levels in seconds by zipping in the Thylacine Liner. In the coldest environments, add the Thylacine Liner to transform the Thylacine to a 0º sleeping bag.

Convenience throughout the night

Keep your phone or headlamp close with the accessible zipper chest pocket. Create a makeshift pillow from your jacket, or secure your Puffin Pillow in place, using the Thylacine’s built-in pillow pocket. Never wake up with your pillow at your feet.

EN Temperature Ratings

The EN 13537 test standardizes temperature ratings on sleeping bags.* When using the same insulation in the same environment, women generally sleep colder than men. The best guideline for women is the Comfort rating, while the best guideline for men is the Lower Limit rating.

Comfort: The temperature at which a standard female can expect to sleep comfortably in a relaxed position.

Lower Limit: The temperature at which a standard male can sleep for eight hours in a curled position without waking.

Extreme: The minimum temperature at which a standard female can remain for six hours without risk of death from hypothermia (though frostbite is still possible).

*These ratings assume the camper is using a sleeping pad, a tent, and is wearing one base layer of long underwear.

Thylacine (Down)

Tech Specs

Tech Specs

Best Uses
Camping, Backpacking
Temperature Rating
Comfort: 29°F / -2°C; Lower Limit: 18ºF / -8ºC; Extreme: -14ºF / -26ºC
Downtek™ 750FP water repellent down - RSD certified
Regular / Long
Fill Weight
Regular 16 oz / 454 g; Long 17 oz / 482 g
Total Weight
Regular 35 oz / 992 g; Long 37.5 oz / 1063 g
Packed Dimensions
12.5 in x 8 in / 31.7 cm x 20 cm
Fits up to
Regular 6 ft / 183 cm; Long 6 ft 6 in / 198 cm
Regular 78 in / 198 cm; Long 84 in / 213 cm
Shoulder Girth
Regular 70 in / 177 cm; Long 70 in / 177 cm
Hip Girth
Regular 62 in / 157 cm; Long 72 in / 157 cm
Knee Girth
Regular 48 in / 123 cm; Long 48 in / 123 cm
Pad Sleeve
Zipper Location
Shell Fabric
Pertex™ Quantum GL 15D Ripstop Nylon with DWR (side + bottom) waterproofing
Footbox Fabric
15D Ripstop Nylon + DWR
Lining Fabric
20D Ripstop Nylon + DWR
Available Colors
FAQ & Care

Frequently Asked Questions

Do I need to purchase the Thylacine liner?

If you are camping in conditions lower than 20ºF, you will need to purchase the Thylacine Liner to zip into your Thylacine sleeping bag. For temperatures of 20ºF and above, you do not need a liner.

How does the bag adjust to all conditions?

With a removable down liner that can add or takeaway warmth in seconds, this bag is the perfect option when you aren't sure what the weather conditions will be when camping. From 0ºF to 40ºF, the Thylacine has you covered.

How do I wash my Thylacine?

The performance of this fill (heat retention!) is directly tied to its "loftiness." To help your products retain their loft, please follow our storage and cleaning instructions. Remember: Loft = warmth. Lofty gear = happy you.

Keep your sleeping bag in tip-top shape by spot cleaning or hand washing when possible. Hand washing your gear with cold water and Grangers Down Wash + Repel is best for extending its useful life, but it can also be cleaned in a front-load washing machine (do not use a washing machine with an agitator).
Washing machine instructions:

  • Zip up the sleeping bag.
  • If the gear is soiled or stained, use the recommended amount of Grangers Down Wash + Repel. Do not use fabric softener, bleach, or stain removal products.
  • Wash the gear by itself using the gentle/cold water setting.
  • Hang to dry, or use the delicate, no heat tumble setting on the dryer with a clean tennis ball, or dryer ball. Do not stuff back in stuff sack damp or wet.

How do I store my Thylacine?

Where your bag sleeps when you're not sleeping in it affects its lifespan. After a camping trip, avoid gnarly smells and damaged fill by making sure your gear is completely dry before storing. Then, lightly stuff in the large, upcycled storage bag (included) or hang in a dry location. This keeps your down lofted when stored for extended periods of time.

Customer Reviews

Thylacine 20ºF

Thylacine 20ºF

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