Pertex Insulated Midlayer
Black Onyx

The M-9 is a lightweight insulated midlayer built to perform both as a standalone piece and as a reliable insulation layer across a wide range of outdoor activities. Adaptable and versatile, it delivers dependable warmth without unnecessary weight, making it easy to bring along whatever the day holds. PrimaLoft® Gold Eco insulation provides efficient thermal comfort that holds up as conditions change.

Built from a Pertex outer fabric, the tightly woven face balances light protection with excellent breathability, while its engineered yarn structure adds durability without adding bulk. Stretch grid fleece side panels under the arms enhance comfort, mobility, and airflow where you need it most. The hood, chin protection, one chest pocket, and two hand pockets round out a practical, layering-friendly design finished with YKK zippers.

Minimalist design and refined lines reflect The Mountain Studio's commitment to Swiss alpine engineering and timeless style. The Pertex shell and PrimaLoft® Gold Eco insulation are chosen for durability and longevity, supporting years of reliable use and repairability without compromising performance.

Available in Black Onyx, the M-9 moves easily between active days in the mountains and everyday cold-weather wear. Its ergonomic fit and lightweight warmth make it a versatile insulated midlayer for skiing, hiking, and layering under a shell. This high quality Pertex insulated midlayer is trusted for dependable comfort and breathability in demanding conditions.