Sleeping bag liner - REACTOR Lightweight sleeping bag liner
Sea to Summit Reactor Lightweight Liner
The Sea to Summit Reactor Lightweight is a lightweight thermal liner designed to enhance the performance of your sleeping bag during hiking or bivouac nights. Made from Thermolite® Pro, it retains and reflects body heat thanks to hollow fibers and infrared-absorbing pigments, increasing the sleeping bag's temperature by up to approximately +4 °C without adding bulk.
Its stretch knit fabric and articulated arm openings offer great freedom of movement while sleeping. Lightweight, compact, and treated with HeiQ Fresh technology to limit odors, it dries quickly and helps to protect and keep your sleeping bag clean, extending its lifespan during treks and outdoor travels.
Ideal for hiking, trekking, and camping, the Reactor Lightweight is an effective solution to gain warmth and comfort while maintaining ultralight gear.
FAQ
1. What is the ideal weight for my pilgrim's backpack?
The golden rule on the Camino is to keep your pack weight under 10% of your body weight . For example, if you weigh 70 kg, your pack should not exceed 7 kg. At the Pilgrim's Shop , we carefully select ultralight and compact gear (sleeping bags, clothing, toiletries) to help you protect your back and joints, kilometer after kilometer.
2. How to choose your shoes for walking to Santiago?
The choice depends on the section of the route and the season. For rocky paths like the Camino Francés , a mid- or low-cut hiking shoe with good grip is ideal. Expert tip: Always choose a size larger than your usual size, as your feet will swell with exertion. Don't forget to break them in by walking several dozen kilometers before your big departure.
3 - What are the essentials to avoid blisters?
Blisters are the pilgrim's number one enemy. To prevent them, we recommend the "three-layer" system:
- A pair of technical anti-friction socks (in merino wool or double thickness).
- A daily application of anti-chafing cream (such as Akileïne).
- Precise lacing of your shoes.
Find our complete "Anti-Blister Kit" in our accessories section.



