Original: $60.43
-65%$60.43
$21.15The Story
An ideal addition to your camping kit, the Reactor Lightweight Sleeping Bag Liner from Sea To Summit offers up to 6°C of additional heat inside your sleeping set up. In addition to the stretch-knit construction, this liner has armholes to increase freedom of movement, handy if you toss and turn under the stars.
Features:
- Freedom to Move: Stretch-knit construction and armholes provide unrestricted comfort for any sleep position.
- Lightweight Thermal Boost: Thermolite® Pro with FIR and hollow-core fibres adds up to 4 °C | 7 °F warmth.
- Easy to Clean: Quick-drying and machine washable with HeiQ Fresh odour control treatment.
- Compatible Design: Fits all sleeping bags and snaps into Sea to Summit bags for secure positioning.
- Protects Your Sleeping Bag: Reduces washing frequency to maintain insulation loft and extend bag lifespan.
- Ideal for backpacking, travel, hut stays, and warmer-weather adventures.
Materials:
-
Thermolite Pro & Thermolite EcoMade
Specifications:
- Best use: Backpacking & Camping
- Added Warmth: Up to 6°C
- Comes With: Ultra-Sil stuff sack
- Shape: Mummy
- Weight: 255g
- Max Height: 185cm

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
An ideal addition to your camping kit, the Reactor Lightweight Sleeping Bag Liner from Sea To Summit offers up to 6°C of additional heat inside your sleeping set up. In addition to the stretch-knit construction, this liner has armholes to increase freedom of movement, handy if you toss and turn under the stars.
Features:
- Freedom to Move: Stretch-knit construction and armholes provide unrestricted comfort for any sleep position.
- Lightweight Thermal Boost: Thermolite® Pro with FIR and hollow-core fibres adds up to 4 °C | 7 °F warmth.
- Easy to Clean: Quick-drying and machine washable with HeiQ Fresh odour control treatment.
- Compatible Design: Fits all sleeping bags and snaps into Sea to Summit bags for secure positioning.
- Protects Your Sleeping Bag: Reduces washing frequency to maintain insulation loft and extend bag lifespan.
- Ideal for backpacking, travel, hut stays, and warmer-weather adventures.
Materials:
-
Thermolite Pro & Thermolite EcoMade
Specifications:
- Best use: Backpacking & Camping
- Added Warmth: Up to 6°C
- Comes With: Ultra-Sil stuff sack
- Shape: Mummy
- Weight: 255g
- Max Height: 185cm














