Thermarest Synergy™ Sleeping Bag Liner Muse The increased density of tungsten

The increased density of tungsten allows for ultimate sensitivity and durability while keeping a small enough profile to get your baits through heavy grass and cover with ease

spin 20% sooner

and provide stress-free control when chunking into the wind

Whether you’re planning your first backpacking trip or your next one

whether you're spending a long day at the job site or hanging out in the backyard

Thermarest Synergy™ Sleeping Bag Liner Muse The increased density of tungstenThe soft and cozy Synergy Sleeping Bag Liner adds warmth, comfort and years of life to any sleeping bag. Contributing up to 5F 3C degrees of warmth to your sleeping system, the soft, stretch knit polyester also serves as a protective barrier to your expensive sleeping bags materials, absorbing the sweat and oils that would otherwise go directly into your bag and decrease its loft. Now, instead of washing and drying your entire bag or allowing that