evo.com | Smartwool Long Underwear Tops > If you take your baselayer game seriously (and you should), the Smartwool Intraknit Thermal Merino Base Layer Crew Top is the holographic legendary version. Merino wool woven with polyester and elastane for improved durability, stretch and articulation will make it hard to go back to anything else. Slim Fit Mesh Ventilation Seamlessly Knit In Gender-Specific Zones Designed to Keep the Body Dry and Comfortable 3D Mapping Results In Near Custom Fit and Freedom of Movement 53% Merino Wool / 45% Polyester / 2% Elastane Engineered Construction Uses Knit Structures to Enhance Performance with Lighter Weights and Cleaner Finish | Women's Smartwool Intraknit Thermal Base Layer Crew Top 2027 - Medium Green | Wool/Elastane/Polyester