W Seamless Merino Base Top
Sky Captain

The U-9 W is a women's close-fitting base layer designed for skiing and snowboarding in colder weather, where warmth, breathability, and moisture regulation all need to work together. Made from a fine merino wool and polyamide blend, it combines the natural comfort of wool with added durability and shape retention.

Open mesh structure panels increase airflow where needed, while the seamless construction creates a smooth, low-bulk fit that layers comfortably under outerwear. Merino wool helps regulate temperature and continues to insulate even when damp, and it is finished with a feminine fit, structure stripes on the sleeves, and knitted branding details.

Minimalist design and refined lines reflect The Mountain Studio's commitment to Swiss alpine engineering and timeless style. Made from a merino wool and polyamide blend for natural warmth, breathability, and lasting shape retention.

Available in Sky Captain, the U-9 W is built to layer smoothly under outerwear for skiing, snowboarding, and cold-weather days. This merino base layer is trusted for natural warmth, breathability, and next-to-skin comfort.