Pertex Insulated Midlayer
Castle Wall Sand

The Mountain Studio M-9 Pertex Insulated Midlayer is engineered for mountain sports and active outdoor use where adaptable warmth and breathability are essential. Built from 20D Pertex Quantum, this lightweight warm midlayer balances wind resistance with airflow, while the rhomboid filament structure increases long-term durability. PrimaLoft Gold Eco insulation, made from 55% recycled content, delivers reliable warmth even in damp conditions without added weight.

Strategically placed stretch grid fleece side panels under the arms enhance mobility and ventilation during high-output activities. The ergonomic hood, chin protection, and YKK zippers add practical comfort for changing weather. Two hand pockets and a zippered chest pocket provide secure storage for essentials, supporting both alpine pursuits and city routines.

Visual details include a minimalist silhouette and clean lines, with color options in beige, blue, green, and two-tone white-beige. The technical ripstop nylon shell and subtle grid fleece panels reflect The Mountain Studio’s refined approach to mountain-ready apparel. This insulated midlayer is designed to work as a standalone piece or as a functional jacket for layering under a shell.

Responsibly sourced materials and reinforced stitching support the M-9’s longevity and sustainability. The use of recycled PrimaLoft insulation and durable Pertex fabric ensures this jacket remains a dependable choice for skiing, hiking, travel, and daily wear across seasons.