Mens Long Johns Thermal Underwear

A thermal underwear pants & shirt set.

Long john thermals are the solution to packing smarter, lighter and warmer for travel and hiking.

By adding a thermal layer firm against the body, heat is efficiently trapped thus allowing the traveler to pack a lighter set of pants and outer core jacket.

The layer system is the key to efficient insulation while allowing full flexibility in personal temperature control (if you get too hot, just strip a layer off).