Seam-free technology with a water column: 15,000 mm H2O and breathability: 10,000 g/m2/24 h protects against moisture and at the same time wicks away sweat.The bottom third layer offers basic thermal insulation and comfort in contact with the skin. DWR water-repellent outer treatment of the top layer of the garment material prevents moisture from seeping in and water immediately drains over the surface in the form of balls.