With its incredibly insulating 110g/m2 Thermolite® fabric, the Thermolite® Reactor Extreme boosts sleeping bag performance by up to 15 degrees Celsius. In order to save weight, improve thermal efficiency, and provide a good night's sleep even when the temperature drops, the roomy shape is slightly tapered from head to foot. Additionally, the Reactor has a drawcord-adjustable hood that can be pulled down as needed for added warmth.

Thermolite® is a hollow-core fabric that offers exceptional warmth for its weight while being incredibly breathable. When used alone as a warm weather bag or to supplement a sleeping bag, the Thermolite® Reactor Extreme is perfect.

Sea To Summit Thermolite Reactor Extreme Sleeping Bag Liner Features

Sea To Summit Thermolite Sleeping Bag Warmer Liner

- Adds warmth to a sleeping bag
- Mummy shape with a box foot
- Draw cord hood with mini cord lock
- Machine washable
- Packs into its own UltraSil^® Cordura^® stuff sack
- 110g/m² Thermolite^® construction throughout

Sea To Summit Thermolite Reactor Extreme Sleeping Bag Liner Specifications

- Size: Regular
- Dimensions: 210 (L) x 90 (W) cm

- Size: Long
- Dimensions: 235 (L) x (17 x 11.5 cm)