Boost your sleep system’s warmth with the Reactor Fleeceweight liner. Thermolite® hollow-core fibres and grid fleece trap and reflect body heat, adding up to 8 °C (14 °F) with minimal weight. The stretch fleece and arm openings allow freedom of movement, while snap attachments fit Sea to Summit sleeping bags for easy access. Easy to clean and quick-drying, it features HeiQ Fresh odour control. Using a liner reduces sleeping bag washes, helping preserve loft and extend lifespan.
- Boosts sleep system warmth: Reactor Fleeceweight uses Thermolite® hollow-core fibres and grid fleece to trap warmth with minimal added weight
- 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
- 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 minimize environmental impact
- Can be used on its own as a lightweight sleeping bag in warm-weather conditions
- Best use: cold-weather backpacking, ski touring, (stand-alone) summer use
- Type: thermal liner
- Weight: 400 g (14.1 oz.)
- Length: 193 cm (76 in.)
- Packed size: 25 cm x 15 cm x 15 cm (5.9 in. x 9.8 in. x 5.9 in.)