







Sleeping bag liner - Bivouac, Camping -
The Reactor Lightweight Liner from the brand Sea to Summit is a versatile mummy-style sleeping bag liner designed for bivouac and camping in 4 seasons.
This lightweight and breathable liner is ideal for improving hygiene and extending the lifespan of your main sleeping bag without adding insulation. Its mummy shape perfectly fits the body for optimal comfort, while being very compact and easy to carry. Without a zip, it offers simplicity of use and great freedom of movement.
Made with quality technical materials, this sleeping bag liner ensures good moisture management and protection against dirt. It is perfect for trekking enthusiasts and outdoor adventurers seeking lightweight, practical, and durable gear for all seasons.


- Temperature gain in the sleeping bag up to +4 °C
- Sleeves for comfort and ventilation
- Fits into all sleeping bags and can be attached to Sea to Summit sleeping bags
- Easy to clean
- Quick drying
- Protects the sleeping bag from moisture and dirt
- Certified recycled material RCS
- Anti-odour technology HeiQ® Fresh
Composition :
- Hollow fibre fleece Thermolite® Pro
| RCS Recycled Claim Standard 100 | This label certifies that over 95% of recycled materials are present in the finished product. It also demonstrates the stakeholders' commitment to transparent labelling and exemplary traceability of raw materials. |
| Thermolite® Pro | THERMOLITE® Pro uses hollow fibres and a ceramic that absorbs infrared radiation to reflect the heat emitted by your body, providing increased warmth and comfort. |