Material 100% merino wool Insulation Weight 250 Color: Festive Fuchsia Mountain Scape Slotted as a purely merino baselayer option from Smartwool, the Classic Thermal Base Layer Bottom offers excellent thermal regulating properties to keep us spinning laps on our favorite chair. Merino wool is truly the leading insulating material because it manages to retain warmth even when it’s damp and breathe with us as we work up a sweat—all while being naturally odor-resistant. Baselayer bottoms for anything from ski touring to freeride laps Full merino wool construction helps us manage our microclimate Form-fitting design eliminates excess material for enhanced mobility Mid-rise provides a secure fit and feel for dynamic movement Flatlock seams enhance comfort and bolster durability