The Sea to Summit Reactor Fleece Sleeping Bag Liner is constructed using advanced hollow-core Thermolite® Pro fibers in a grid-pattern design, making it the warmest liner option available for cold weather conditions. With added features such as shoulder zippers and a drawcord footbox, this liner gives you the ability to regulate your body temperature throughout the night. Its compatibility with the Free Flow-Zip system of Sea to Summit sleeping bags allows for easy attachment and enhanced functionality. Whether used as an extra layer for colder seasons or a standalone sleeping bag for warmer weather, the versatile Reactor Fleece Liner provides optimal comfort and ventilation.

Best Use: Thermal Boost

Weight: 14.8oz | 420g

Length: 85in | 216cm

Packed Size: 9.8 x 3.5 x 5.5in | 25 x 9 x 14cm

Features

• Thermal boost to retain heat and warmth, as the core of your sleep system the Reactor liner extends the performance of your sleeping bag and sleeping mat in the coldest of conditions
  
• Hollow-core Thermolite® EcoMade fibers are used in a grid-pattern fleece for maximum warmth retention
  
• Drawcord footbox can be opened or closed for optimal comfort and integrates perfectly with the footbox of our Free-Flow Zip system in select Sea to Summit sleeping bags
  
• HeiQ Fresh odor control technology helps keep the liner fresh even after extended use
  
• A mummy shape designed for maximum thermal efficiency and includes shoulder zippers and footbox drawcord for additional temperature regulation
  
• Sea to Summit Guarantee is offered for the Lifetime of this product