If go-to versatility is what you seek, the men´s Burton Midweight Base Layer crew balances warmth, breathability, and quick-drying performance with built-in climate control that you can count on all season.FEATURES:-Built-in Climate Control.Midweight 200 reacts to your body temperature, accelerating moisture wicking when you´re hot and retaining warmth when you´re cold for balanced comfort all day long.-Small Details Make a Big Difference.Stuff like thumbhole cuffs and chafe-free seams up the comfort factor.-Stink Less.The sustainable odor control of HeiQ Fresh keeps it fresh without limiting breathability.-Low Environmental Impact.Bluesign® approved materials reduce impact on humans and the planet during manufacturing.