The sleeping sheet adapts perfectly to the shape of your body and your sleeping bag. Its mummy-shaped design reduces empty spaces to maximize the retention of body heat , ensuring a comfortable night's sleep even in the harshest climates.

Thermolite® Pro fabric is renowned for its exceptional heat retention properties. This lightweight but high-performance material creates an effective thermal barrier against the cold, while remaining breathable to prevent overheating.

The Reactor liner incorporates new infrared technology for better heat retention . This technology uses special fibers to absorb and retain body heat, thereby increasing body temperature. overall up to +12% without adding weight or excessive volume.

Perfect for use in a variety of weather conditions, this liner not only improves the warmth, but also the insulation of your sleeping bag. It is ideal for excursions where temperatures may drop unexpectedly. Thanks to its stretch fabric, the liner offers great freedom of movement , allowing you to sleep in different positions without restriction. The fabric is soft to the touch, ensuring extra comfort throughout the night.

Designed specifically for cold conditions, the Sea To Summit Reactor liner is an essential addition for hikers, climbers and campers planning adventures in cold environments. It is compact and light, easy to transport and quick to dry , making it an excellent choice for any expedition.