SKU: 053202PLU: 156115UPC/EAN: 9327868169771
Sea To Summit Reactor Lightweight Sleeping Bag Liner - Regular
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description
The Sea to Summit Reactor Lightweight Liner is built to boost warmth without adding bulk. Using advanced Thermolite® Pro fabric with infrared-absorbing ceramic pigments and hollow-core fibres, it helps trap body heat and enhance your sleep system performance. Adding up to 4°C of warmth, it’s an ideal upgrade for ultralight expeditions where every gram counts.
The stretch-knit construction and articulated arm openings allow unrestricted movement through the night, so comfort isn’t compromised. Treated with HeiQ Fresh odour control, the liner is quick-drying, machine washable, and helps extend the life of your sleeping bag by reducing how often it needs washing. Lightweight, practical and performance-driven, it’s a smart addition to any serious kit.
features
- Lightweight and insulative, Thermolite® Pro technology with hollow-core fibres and infrared-absorbing pigments enhances warmth with minimal pack size
- Freedom to Move – Stretch-knit and shaped arm openings allow unrestricted movement, providing natural comfort throughout your sleep
- Technical Shape and Hood – Ergonomic design with a fitted hood delivers optimal warmth and comfort without extra weight or bulk
- Fits any sleeping bag - Stretch fabirc means the Reactor Liner fits any shape of sleeping bag
- Stay Fresh Longer – HeiQ Fresh odour control technology keeps the liner fresh after extended use
- Sleep System Integration – Snap connectors at the shoulders easily pair with Sea to Summit sleeping bags for quick, hassle-free entry and exit
- Easy to Keep Clean – Machine washable construction simplifies care and reduces wear on your sleeping bag over time
- Lower Impact Materials – Crafted with certified recycled fibres and bluesign APPROVED materials to minimise environmental impact
Frequently Asked Questions
- How much warmth does a Reactor Lightweight add to a sleeping bag?
The added warmth depends on how well the sleeping bag retains heat and how well the sleeping pad insulates. When paired with a quality bag and mat, a Reactor Lightweight can add up to 4 °C - Can a Reactor be machine washed and dried?
Reactor liners can be machine washed without special soaps. Do not use fabric softeners. Air dry or machine dry on a cool to warm cycle without dryer sheets. - Can a Reactor Lightweight work as a stand-alone sleeping bag?
In summer temperatures and still air conditions, a Reactor Lightweight can function on its own for sleepers wearing long base layers. The fabric is not windproof.
specifications
| Dimensions: | 193 x 80cm |
| Packed Dimensions: | 10 x 18 x 10cm |
| Weight: | 255g |
| Maximum User Height: | 185cm |
| Best Use: | Backpacking, Cycle touring, Paddle touring |
| Materials (Liner): | 100% Post-Consumer Recycled Polyester |
| Materials (Carry Bag): | 100% Polyester |
warranty
Covered by the Sea To Summit limited lifetime warranty against defects in materials or workmanship
