ThermarestSynergy Sleeping Bag Liner - Sleeping bag liner

In the heart of a starry night, cradled by the breath of nature, your sleep deserves the best cocoon. This is where the Synergy™ Sleeping Bag Liner by Thermarest comes in, your soft ally for nights warmed with tenderness. This sleeping bag liner not only adds up to 3°C of warmth to your nightly cocoon, but it also extends the life of your favorite sleeping bag by protecting it from the ravages of time and adventure.

The secret lies in its stretch-knit polyester fabric, a soft material that knows how to be forgotten while pampering your sleep like a welcome hug after a long day of exploration. Whether you are a seasoned hiker or an aspiring adventurer, the Synergy™ Sleeping Bag Liner is the secret ingredient for transforming your nights under the tent into an oasis of comfort.

• Extend the life of your bag: protects the fabric and insulation from dirt and body oils, minimizing wash cycles and prolonging the life of your bag

• Added warmth: adds up to 5 degrees F/3 C of warmth to any sleep system, verified by tests in our internal cold room

• Next-level comfort: a sumptuous stretch-knit fabric and flat perimeter seams provide a super comfortable "base layer" inside your sleeping bag

• Thoughtful shape: carefully shaped to fit inside your favorite mummy bag

• Machine washable

• Fits bags up to 198 cm and weighs only 342 g