Sea to Summit Thermolite Reactor Fleece Liner, Grey 100% Polyester Imported The quarter zip makes it easier to get in and out of, and the paneled hood can be drawn in when maximum warmth is required Smaller and warmer than other fleece liners Technical mummy shape with one handed, easy to operate draw string hood Quarter zip makes it easy to get in and out Can be used as a stand-alone sleeping bag in warmer temperatures