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Ships within 48 hours · Estimated delivery Sep 16 - Sep 21
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responsive ride that holds up over high weekly mileage
100% organic cotton means it starts soft and only gets better with wear
Flatlock seams and a slim fit let it disappear under any shell without bulk
10mm heel-to-toe drop and balanced support make it a natural fit for neutral runners tackling easy days
Smartwool Classic Thermal Merino Base Layer 3/4 Bottom – Women's Summer 2021 responsive ride that holds upBuilt for cold weather output on the slopes or winter trails, the Classic Thermal Merino Base Layer 3 4 Bottom is our top pick for women who run hot but still need real warmth. Merino wool interlock knit regulates temperature and resists odor through long days in the cold, while flatlock seams and a 3 4 cut keep things chafe free and boot compatible. 100% Merino wool delivers natural warmth, breathability, and odor resistance without synthetic funk