
Sea to Summit Reactor Midweight Sleeping Bag Liner
Sea to Summit Reactor Fleeceweight Sleeping Bag Liner
The Reactor Midweight boosts your sleep system’s warmth using advanced Thermolite Pro fabric. Hollow-core fibres and infrared-absorbing ceramic pigments trap body heat, adding up to 6°C / 11°F with minimal bulk.
Stretch-knit construction and arm openings allow unrestricted movement, making it compatible with any sleeping bag shape. Quick-drying, easy to clean, and treated with HeiQ Fresh odour control, it also helps extend your sleeping bag’s lifespan by reducing the need for frequent washing.
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Best UseBackpacking, Cycle touring, Paddle touring
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Material(s)100% Post-Consumer Recycled Polyester; Stuff Sack: 100% Polyester

Original: $69.39
-65%$69.39
$24.29More Images





Sea to Summit Reactor Midweight Sleeping Bag Liner
Sea to Summit Reactor Fleeceweight Sleeping Bag Liner
The Reactor Midweight boosts your sleep system’s warmth using advanced Thermolite Pro fabric. Hollow-core fibres and infrared-absorbing ceramic pigments trap body heat, adding up to 6°C / 11°F with minimal bulk.
Stretch-knit construction and arm openings allow unrestricted movement, making it compatible with any sleeping bag shape. Quick-drying, easy to clean, and treated with HeiQ Fresh odour control, it also helps extend your sleeping bag’s lifespan by reducing the need for frequent washing.
-
Best UseBackpacking, Cycle touring, Paddle touring
-
Material(s)100% Post-Consumer Recycled Polyester; Stuff Sack: 100% Polyester

Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Sea to Summit Reactor Fleeceweight Sleeping Bag Liner
The Reactor Midweight boosts your sleep system’s warmth using advanced Thermolite Pro fabric. Hollow-core fibres and infrared-absorbing ceramic pigments trap body heat, adding up to 6°C / 11°F with minimal bulk.
Stretch-knit construction and arm openings allow unrestricted movement, making it compatible with any sleeping bag shape. Quick-drying, easy to clean, and treated with HeiQ Fresh odour control, it also helps extend your sleeping bag’s lifespan by reducing the need for frequent washing.
-
Best UseBackpacking, Cycle touring, Paddle touring
-
Material(s)100% Post-Consumer Recycled Polyester; Stuff Sack: 100% Polyester



















