Upgrade your sleeping bag with the First Ascent Thermolite Sleeping Bag Liner. This fleece sleeping bag liner can add up to 15°C of warmth to your sleeping bag.
Adds up to 15°C to the temperature rating of your sleeping bag
Works best with comfort rating of 0°C or less
Excellent warmth to weight ratio
Lightweight and compact
Mummy shape with cowl
Ties to secure to the bag
Dimensions: 210 x 90cm