Men's Smartwool Merino 250 Base Layer Colorblock Crew - SW016353-H87 Essentials thermoregulation

thermoregulation

to customize the exact placement and beam angle of light

the Weather Jacket offers 360° ventilation in an ultralight package that's also tear proof and fast drying

But SOME scientists say it causes eye strain

- Performance woven with a bit of stretch

Men's Smartwool Merino 250 Base Layer Colorblock Crew - SW016353-H87 Essentials thermoregulationOur Men's Merino 250 Base Layer Colorblock Crew features 100% responsibly sourced Merino wool made with an interlock knit for enhanced comfort, breathability, thermoregulation, and odor resistance. With shoulder panels and a flatlock seam construction, this base layer brings consistent comfort, as well as reliable warmth and durability, to winter hiking, running, and skiing.