This fully customizable sleeping bag has endless options. Best yet, it adapts to every need. The Thylacine bag boasts a 20°F rated sleep system. In addition to this base layer, you can use the Thylacine Liner that will allow you to sleep at 0°F or above. The Thylacine is covered under Kammok's lifetime warranty and covers defects and damages.

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.