Built to be the ultimate shelter for backcountry skiers

attention to detail

So before they even show up on the jobsite

it's always at attention

Front fly with snap closure

Sea to Summit Thermolite® Reactor Extreme Liner (Adds up to 25°F) Size:Long Built to be the ultimateThe THERMOLITE Reactor Extreme liner is Sea to Summits 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. In warmer weather, it can be used a stand alone sleeping bag. The hollow core fibers of the THERMOLITE fabric work like hollow polar bear or caribou fur along with the knitted structure, this traps plenty of insulating air. Super soft and amazingly