Sea To Summit Reactor Fleeceweight Sleeping Bag Liner

Stay warmer on your adventures with the Reactor Fleeceweight, a high-performance sleeping bag liner designed to maximise heat retention without adding bulk. Combining Thermolite® hollow-core fibres with grid fleece, it efficiently traps and reflects body heat, boosting your sleep system by up to 8°C while remaining lightweight and packable. The stretch-knit construction and shaped arm openings provide natural freedom of movement, ensuring a comfortable night’s sleep in any position. Its ergonomic shape and fitted hood enhance warmth where it’s needed most, while snap attachments allow easy integration with compatible sleeping bags for quick entry and exit. Practical and easy to maintain, it’s machine washable, quick-drying, and features HeiQ Fresh odour control to keep it fresher for longer. Using a liner also helps reduce the need to wash your sleeping bag, preserving its loft and extending its lifespan.

Features:

• Thermolite® hollow-core fibres and grid fleece for lightweight warmth
• Boosts sleep system temperature by up to 8°C / 14°F
• Stretch-knit fabric and shaped arm openings for unrestricted movement
• Ergonomic design with fitted hood for enhanced comfort and heat retention
• Snap attachments for easy integration with compatible sleeping bags
• HeiQ Fresh odour control technology for lasting freshness
• Machine washable and quick-drying for easy care
• Helps extend sleeping bag lifespan by reducing wash frequency