Green sleeping bag with yellow accents on a white background

Person wearing a green and yellow hooded garment on a white background

Sleeping bag liner with yellow and black design on a white background

Sea to Summit Reactor Midweight Sleeping Bag Liner

Sea to Summit

$99.99

Length:

Short Regular Long

Variant

Features

Boosts sleep system warmth – Thermolite® Pro fabric with Far Infrared technology and hollow-core fibres traps and reflects body heat with minimal bulk
Freedom to move – Stretch-knit construction and shaped arm openings allow unrestricted movement for natural sleeping comfort
Technical shape with hood – Ergonomic design and fitted hood provide optimal warmth and comfort without added weight
Stay fresher for longer – HeiQ Fresh odour control keeps the liner feeling clean even after extended use
Seamless sleep system integration – Shoulder snap connectors attach easily to Sea to Summit sleeping bags for quick, hassle-free entry and exit
Easy to keep clean – Machine-washable design simplifies care while reducing wear on your sleeping bag
Lower-impact materials – Made with certified recycled fibres and bluesign® APPROVED materials for environmentally responsible performance

Specifications

Weight

S: 330g
R: 350g
L: 355g

Certification

RCS - 1114661

Dimensions

S: 80 x 178cm
R: 80 x 193cm
L: 80 x 198cm

Ideal for

Backpacking, Cycle touring, Paddle touring

Packed dimensions

11.5 x 11.5 x 19cm

Recommended user height

S: 170cm
R: 185cm
L: 198cm

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.