Thermarest Synergy Sleeping Bag Liner

Add comfort, warmth, and protection to any sleeping bag.

The 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 bag’s 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 grime to clump up the insulation, all you have to do is remove the liner and toss it in the washing machine.

Features

• Comfort Minded: Lavish stretch-knit fabric and flatlock perimeter seams create a soft base layer feel inside your sleeping bag.
• Added Warmth: Adds up to 5F/3C of warmth to your sleeping bag or quilt for nights when you need extra protection from the cold.
• Thoughtfully Shaped: Designed to fit in your favorite mummy bag but still feel roomy for an untangled sleep.
• Clean: Helps prevent dirt and body oils from seeping into your bag, allowing you to wash it less and prolong its life.

Specifications