The ultimate thermal essential, Smartwool Classic Thermal Merino Base Layer One-Piece. Crafted with slim-fit contours that follow your body's natural shape, this one-piece features a mock neck and long sleeves for full coverage without bulk. The interlock-knit merino fabric excels at moisture management, temperature regulation, and odor resistance, ensuring all-day freshness. Thoughtful design touches like flatlock seam construction minimize chafing, while set-in sleeves and side seams wrapped to the front provide a distraction-free fit for every adventure. Need convenience on the go? The zippered drop seat with a fully functional fly adds practical functionality without sacrificing comfort. 100% Merino wool. Machine washable.
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Available Colors: Black, Black Tie Dye
Size Reference for SmartWool Base Layer One-piece
Available Sizes: XX-Large, Large, X-Large, Medium
