It is an old model or a product that we can no longer order at the manufacturer.
The Soie Stretch Rectangular Standard is a sleeping bag liner from Sea To Summit that will accompany you on your travels. This sleeping bag liner will be useful both for protecting your sleeping bag from dirt and for improving its thermal performance. The composition of this Sea To Summit sleeping bag liner in silk will provide you with a lot of softness for added comfort. Additionally, the stretch panels made of polyester/lycra along the seams will enhance its durability.These stretch panels allow the liner to follow your movements as you shift during the night.