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As one of the heaviest base layer tops and   best base layers for cold weather, this garment uses 100% responsibly   sourced Merino wool, shoulder panels, and a flatlock seam construction   to help minimize chafing as well as help keep you comfortable and   temperature-regulated as you enjoy high-intensity skiing, hiking,   running, and more.                                                                 \u003cbr\u003e\n\u003cbr\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFit: Slim\u003c\/li\u003e\n  \u003cli\u003eThe slim fit is intended to follow the contours of the body\u003c\/li\u003e\n  \u003cli\u003eFabric helps combine the moisture   management, temperature regulation, and odor resistance of 100% Merino   wool with interlock knit for comfort\u003c\/li\u003e\n  \u003cli\u003eFlatlock seam construction and offset shoulder and side seams designed to help increase comfort and minimize chafing\u003c\/li\u003e\n  \u003cli\u003eSide seams wrap to front\u003c\/li\u003e\n  \u003cli\u003eSize medium center-front zipper: 10\" (25 cm)\u003c\/li\u003e\n  \u003cli\u003eMade in Vietnam: 100% Wool-Merino. 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