Reactor Midweight Sleeping Bag Liner (Short)

The Reactor Midweight enhances your sleep system with advanced Thermolite Pro fabric. Infrared-absorbing ceramic pigments and hollow-core fibres trap body heat, adding up to 6C/11F to a sleep system with minimal bulk. Stretch-knit fabric and arm openings allow unrestricted sleep, making it a great fit for any shape sleeping bag.

• Boosts Sleep System Warmth – Thermolite Pro uses Far Infrared technology and hollow-core fibres to trap and reflect body heat without extra bulk.
• Freedom to Move – stretch-knit fabric and shaped arm openings allow unrestricted movement for natural comfort.
• Technical Shape and Hood – an ergonomic design with a fitted hood for optimal warmth without extra weight.
• HeiQ Fresh Odour Control – stays fresh after extended use.
• Sleep System Integration – snap connectors at the shoulders pair easily with Sea to Summit sleeping bags for quick entry and exit.
• Machine Washable – simplifies care and reduces wear on your sleeping bag over time.
• Lower-Impact Materials – certified recycled fibres and bluesign approved materials.

Browse more of our sleeping bag liners for other lengths and weights.