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Thylacine Sleeping Bag

Adapt to Every Season


One sleeping bag, endless options. The Kammok Thylacine Down is a fully customizable sleeping bag system that can adapt as your needs and environment change. On its own, the Thylacine Down is a 20°F rated sleep system. Combined with the Thylacine Liner, you can sleep comfortably at or above 0°F. The Kammok Thylacine Down Sleeping Bag is covered under our lifetime warranty against manufacturer defects and damages within proper use.

See additional Technical Specs, Care Instructions, and Use Information below.


Variable Warmth Technology™

The heart of the Thylacine’s radically diŠfferent interface is found with our patent-pending Variable Warmth Technology, delivering complete customization through a system of changeable insulated liners.


No two people are the same size or sleep the same way in their sleeping bags. CustomFit™ adjustments provide the perfect contour to your body, eliminating cold spots and offering a fitted sleeping bag experience.

Advanced Materials

The Thylacine combines silky-soft, lightweight fabrics, advanced insulation technologies, 3D construction, durable hardware, snag free zippers, and a beautifully functional design, making this one of the most technically advanced sleep systems available.

Pillow Pocket

No more pillow ‘slip and slide’. The Thylacine keeps your pillow in place while you sleep.

Storage Pocket

Concealed accessory storage keeps your phone / keys / headlamp in reach and out of sight.

Vaulted Footbox

Cramped feet results in an uncomfortable night’s sleep. The 3D construction of the footbox gives your feet ample room, whether sleeping on your back or your side.

Best In Show

Gear Junkie awarded the Kammok Thylacine with the prestigious "Best in Show" award during the 2015 Summer Outdoor Retailer. Read their review.

Learn More

Customer Reviews

Helpful Videos

Technical Specifications

Down Base Bag Regular / Long
Fill 750 FP with Downtek™
Fill Weight 15oz, 454g / 16oz, 482g
Total Weight 31oz, 871g / 36oz, 1020g
Packed Size 12” x 9” / 30 x 23 cm
Warmth Rating 20°F
Fits up to 6’0”, 183 cm / 6’6”, 198 cm
Length 78”, 198 cm / 84”, 213 cm
Shoulder Girth 70”, 177cm / 70”, 177cm
Available Colors
Regular / Long
Hip Girth 62”, 157 cm / 72”, 157 cm
Knee Girth 48”, 123 cm / 48”, 123 cm
Capacity 1P
Pad Sleeve Yes
Zipper Location Left
Shell Fabric Atmos+ (top color fabric)
15D Ripstop Nylon + DWR (side + bottom)
Footbox Fabric 15D Ripstop Nylon + DWR
Lining Fabric 20D Ripstop Nylon + DWR

Liner | Zips into Base Bag Regular / Long
Dimensions 78” x 34” / 84” x 34”
Fill 750 FP Downtek™
Fill Weight 5.6 oz / 6.2 oz
Total Weight (17oz / 505g) / (21oz / 595g)
Fabric 20D Ripstop Nylon + DWR
Liner Insert | Connects into Liner Regular / Long
Dimensions 68” x 36” / 74” x 36”
Fill 750 FP Downtek™
Fill Weight 2.6 oz / 2.9 oz
Total Weight (9oz/ 255g) / (11 oz / 311 g)
Fabric 20D Ripstop Nylon + DWR

Care Instructions

This product is made with a technically advanced Downtek™ fill.

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.

Storage instructions: Store, lightly stuffed, in a large, breathable bag (included) or hang in a dry location. This keeps your gear fluffy when stored for extended periods and it's why we didn't store your gear in it's stuff sack. Make sure your gear is completely dry before storing it.

Cleaning instructions: Spot clean or hand wash when possible. If machine washing, use a front-load washer only and set to a warm, gentle cycle. Wash down product by itself with a cleaner specifically designed for down (NikWax® Down Wash). Do not use liquid detergent, and do not bleach. Rinse thoroughly, but do not wring. Air dry flat. Shake to restore loft or throw in a dryer on a "no heat" setting with a clean tennis ball. Never dry clean. Rinse thoroughly, but do not wring. Air dry flat. Shake to restore loft or throw in a dryer on a "no heat" setting with a clean tennis ball. Never dry clean.