The THERMOLITE Reactor liner is our top seller in the sleeping bag liner range. It's an excellent cold-weather option for those who need additional warmth. The hollow-core fibers trap heat and offer extraordinary insulating properties. This is a super stretchy, soft, and comfortable choice with a mummy shape, foot box, and a drawcord hood. Compact and lighter-weight than fleece, this is a best seller for good reason.
Highlights
Packed Size Comparison
Similar to a small foam football
Weight
8.7 oz Two sticks of butter
Warmth
Adds up to 14F to the temperature range of your sleeping bag
BONUS
Easy to wash and helps to keep your down bag cleaner for longer
Features
- Adds up to 14F / 8C of warmth to a sleeping bag
- Lighter weight, more packable than fleece
- Mummy shape with a box foot
- Drawcord hood with mini cord lock
- Packs into its own Ultra-Sil stuff sack
Product Details
The Reactor Series Sleeping bag liners, the Venture, Traverse and Basecamp synthetic Sleeping Bags and the foot boxes of the Womens Altitude and Journey down Sleeping Bags use hollow core THERMOLITEfiberto add warmth. These fibers trap extra air for insulation (just like the hollow-cores of polar bear or caribou fur).
In the liners, the knitted THERMOLITEfabric is soft and stretchy and comes in three different weights: 80g/m fabric used in the Reactor and the underside of the Compact Plus liners; a 110g/m fabric which is used in the Extreme, and the core and foot box of the Compact Plus liner; and the Fleece, the warmest of all the fabrics.
THERMOLITEis also used in the Air Sprung Cell sleeping mats.
