The Marmot Men's Isotherm Jacket is lightweight, warm and breathable with protective soft shell piecing on the shoulders and sleeves. This jacket combines an abrasion-resistant Pertex® Quantum® fabric with Marmot's super breathable mesh lining and the new state-of-the-art Polartec® Alpha® insulation, a durable woven material that cuts the need for down-proof fabrics. The result is a well-adapted jacket that's perfect for a wide range of comfort during active use: a backcountry skier's dreams come true.

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