D-8 TThe D 8 T Pertex Techno Down Jacket from The Mountain Studio is engineered for high alpine conditions and demanding winter environments. Constructed with 20D Pertex Quantum fabric, this jacket balances protection and breathability for reliable performance in cold weather. The diamond quilt design is filled with 800 fill power RDS certified down, delivering strong insulation and a lightweight feel for mountain pursuits or city use. This technical down
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