Smartwool Men's Classic Thermal Merino Base Layer Bottom 40110 Lining fabric and insulation are

Lining fabric and insulation are certified as bluesign® approved

Durable Water Repellency (DWR) treatment

We've already done the heavy lifting on this one so sit back

Our Most Versatile Baselayer

Smartwool Men's Classic Thermal Merino Base Layer Bottom 40110 Lining fabric and insulation areDescription We've updated our Men's Classic Thermal Merino Base Layer Bottom to bring you a better fitting, more functional tight. The technical benefits of 100% Merino wool will help you keep your game at a high level for longer. And our heaviest weight wool fabric will help keep you warm and comfortable as you ski, run, and hike the day away. Features Slim Fit 100% Merino wool fabric made with an interlock knit for enhanced comfort, breathability,