Men's Intraknit Thermal Merino Base Layer Colorblock Crew Size:Small With Reactive Lighting technology

With Reactive Lighting technology

double-needle fly construction with a metal-button closure

while the 8-inch inseam (size Medium) plays nicely with shorts when you're layering

13% Elastane

It can be shaped into more complex shapes which are not achievable with standard carbon

Men's Intraknit Thermal Merino Base Layer Colorblock Crew Size:Small With Reactive Lighting technologyMade with innovative Intraknit technology, the Smartwool Men's Intraknit Thermal Merino Base Layer Colorblock Crew is designed with colorblock patterning for a distinctive look. Its 3D knit to enhance performance, and it offers mesh zones for better breathability in all the right places. Plus, this crew is built so that it fits as though its custom made just for you. With enhanced durability features such as ribbed elbows, this shirt will last for a