Extra warmth for colder nights outdoors

The Sea to Summit Reactor Midweight Sleeping Bag Liner is designed to significantly boost warmth while maintaining comfort and freedom of movement. Built with advanced Thermolite Pro fabric, it uses infrared absorbing ceramic pigments and hollow core fibres to help trap body heat, adding up to 6 °C of warmth with minimal bulk. Stretch knit construction and shaped arm openings support natural movement during sleep, making it suitable for any sleeping bag shape. Quick drying and machine washable, the liner features HeiQ Fresh odour control and helps extend the lifespan of a sleeping bag by reducing how often it needs washing.

Features

• Thermolite Pro fabric adds warmth using infrared absorbing pigments and hollow core fibres
• Designed to increase sleep system warmth with minimal added bulk
• Stretch knit fabric and shaped arm openings allow unrestricted movement
• Ergonomic shape with fitted hood supports warmth and comfort
• Compatible with any sleeping bag shape thanks to stretch construction
• HeiQ Fresh odour control helps keep the liner fresh after extended use
• Snap connectors integrate easily with Sea to Summit sleeping bags
• Machine washable for easy care and reduced sleeping bag wear
• Made with certified recycled fibres and bluesign approved materials

Specifications

• Added Warmth: Up to 6 °C
• Packed Size: 11.5 (W) x 19.0 (H) x 11.5 (D) cm