Outlast Thermal - Men's Long Johns
Outlast Temperature Regulation stores and releases body heat.
It works to keep the wearer’s temperature not too hot… not too cold… but just
right, over a broad range of environments and activity levels.
When your activity level or the outside temperature increase, the Outlast
thermocules that contain the phase change paraffin begin to change from a solid
to a liquid which provides you with a comfortable sensation of thermal equilibrium.
The energy required to activate this process comes from your warm body or the
rising ambient temperature.
When you begin to cool down, Outlast thermocules begin to change back from
a liquid to solid. In this phase change, the energy that was absorbed by the
thermocules while you were active is returned to you.
With the new moisturetransfering material Outlast functions in active use too.