Sleeping Bag Liner Sea to Summit Reactor Extreme Liner Regular Summer 2025
The THERMOLITE®Pro Reactor Extreme liner is Sea to Summit’s warmest knitted sleeping bag liner. If your adventures take you to colder climates, the Reactor Extreme will add plenty of warmth to a sleeping bag. Plus in warmer weather, it can be used as a ‘stand alone’ sleeping bag. With a mummy shape and Thermolite® Pro fabric, the Reactor Extreme Liner featuring a drawcord uses new infrared technology, which reflects the body's infrared heat back to you, paired with comfortable stretch fabric to add warmth, versatility, and increased insulation. The Reactor Extreme feature offers additional heat retention best suited to cold conditions.
The THERMOLITE®Pro Reactor Extreme liner is Sea to Summit’s warmest knitted sleeping bag liner. If your adventures take you to colder climates, the Reactor Extreme will add plenty of warmth to a sleeping bag. Plus in warmer weather, it can be used as a ‘stand alone’ sleeping bag. With a mummy shape and Thermolite® Pro fabric, the Reactor Extreme Liner featuring a drawcord uses new infrared technology, which reflects the body's infrared heat back to you, paired with comfortable stretch fabric to add warmth, versatility, and increased insulation. The Reactor Extreme feature offers additional heat retention best suited to cold conditions.
SKU: ASL031071-190804-ss2025
- Traps insulating air to increase warmth of a 1 season sleeping by up to 15% and 7% for a 3 season bag
- Sustainable construction- 50% Thermolite®EcoMade All-Season fabric, which is made with 100% textile waste and GRS Certified, and 50% Thermolite Pro with infrared technology
- Treated with Heiq Fresh FFL biocide-free effective odour control
- Technical mummy-shape with drawstring hood.
- Available in 2 sizes- regular and compact
- Easy care – machine wash with no special soap needed. Avoid fabric softeners and dryer sheets.
- Packs into its own Ultra-Sil stuff sack
Detailed description
- Traps insulating air to increase warmth of a 1 season sleeping by up to 15% and 7% for a 3 season bag
- Sustainable construction- 50% Thermolite®EcoMade All-Season fabric, which is made with 100% textile waste and GRS Certified, and 50% Thermolite Pro with infrared technology
- Treated with Heiq Fresh FFL biocide-free effective odour control
- Technical mummy-shape with drawstring hood.
- Available in 2 sizes- regular and compact
- Easy care – machine wash with no special soap needed. Avoid fabric softeners and dryer sheets.
- Packs into its own Ultra-Sil stuff sack
Technical Specifications