Sea to Summit Reactor Midweight Liner
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 6°C|11°F 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. Quick-drying and easy to clean, it features HeiQ Fresh odour control and helps extend your sleeping bag’s lifespan by reducing wash frequency.
Features
- 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 and shaped arm openings allow unrestricted movement, providing natural comfort throughout your sleep
- Technical Shape and Hood – Ergonomic design with a fitted hood delivers optimal warmth and comfort without extra weight or bulk
- Stay Fresh Longer – HeiQ Fresh odour control technology keeps the liner fresh after extended use
- Sleep System Integration – Snap connectors at the shoulders easily pair with Sea to Summit sleeping bags for quick, hassle-free entry and exit
- Easy to Keep Clean – Machine washable construction simplifies care and reduces wear on your sleeping bag over time
- Lower Impact Materials – Crafted with certified recycled fibres and bluesign APPROVED materials to minimise environmental impact
Tech specs
-
Best UseBackpacking, Cycle touring, Paddle touring
-
Material(s)100% Post-Consumer Recycled Polyester; Stuff Sack: 100% Polyester
| Short | Regular | Long | |
|---|---|---|---|
| Weight | 330 g | 350 g | 365 g |
| Dimensions | 178 x 80 cm | 193 x 80 cm | 198 x 80 cm |
| Packed Size | 11.5 x 19 x 11.5 cm | 11.5 x 19 x 11.5 cm | 11.5 x 19 x 11.5 cm |
| Fits Up To Height | 170 cm | 185 cm | 198 cm |
Original: $66.83
-70%$66.83
$20.05



Description
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 6°C|11°F 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. Quick-drying and easy to clean, it features HeiQ Fresh odour control and helps extend your sleeping bag’s lifespan by reducing wash frequency.
Features
- 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 and shaped arm openings allow unrestricted movement, providing natural comfort throughout your sleep
- Technical Shape and Hood – Ergonomic design with a fitted hood delivers optimal warmth and comfort without extra weight or bulk
- Stay Fresh Longer – HeiQ Fresh odour control technology keeps the liner fresh after extended use
- Sleep System Integration – Snap connectors at the shoulders easily pair with Sea to Summit sleeping bags for quick, hassle-free entry and exit
- Easy to Keep Clean – Machine washable construction simplifies care and reduces wear on your sleeping bag over time
- Lower Impact Materials – Crafted with certified recycled fibres and bluesign APPROVED materials to minimise environmental impact
Tech specs
-
Best UseBackpacking, Cycle touring, Paddle touring
-
Material(s)100% Post-Consumer Recycled Polyester; Stuff Sack: 100% Polyester
| Short | Regular | Long | |
|---|---|---|---|
| Weight | 330 g | 350 g | 365 g |
| Dimensions | 178 x 80 cm | 193 x 80 cm | 198 x 80 cm |
| Packed Size | 11.5 x 19 x 11.5 cm | 11.5 x 19 x 11.5 cm | 11.5 x 19 x 11.5 cm |
| Fits Up To Height | 170 cm | 185 cm | 198 cm |























