The Thermolite® Fleece Liner is the warmest of Sea to Summit’s® Reactor series and can be used to extend the warmth of your sleeping bag or can also double as a stand-alone summer bag. It’s incredibly warm for its weight and the fabric a brushed finish for extra comfort.
- Technical mummy shape
- One-handed, easy to operate draw string hood
- Paneled hood can be drawn in for maximum warmth
- Smaller and warmer than other fleece liners
- Quarter zip makes it easy to get in and out
- Can be used as a stand-alone sleeping bag in warmer temperatures
- Color: Black
- Dimensions: 78″ x 28″
- Weight: 14.8 oz.
- Suggested use: Backpacking, camping, flying, cycle touring












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