Rukka Outlast T-Shirt

Rukka Outlast T-Shirt

Outlast phase changing material makes Rukka’s Outlast T-Shirt capable of keeping you comfortable in a variety of climates. It’s the base layer to rule them all. 

Energy from your warm body or rising ambient temperatures causes Outlast thermocules to change from a solid to liquid giving a sense of thermal equilibrium.

When you begin to cool down, Outlast thermocules begin to change back from a liquid to a solid. In this phase change, the energy that was absorbed by the thermocules while you were active is returned to you.