Under the outer material of EtaProof® lies a warming wool fleece in this parka jacket. The torso lining is made of a wool fabric, and the sleeve lining is made of viscose for easier donning and doffing. Knitted cuffs keep the wind out. In the front, the parka jacket is closed by means of a two-way metal zipper and metal snap buttons - for better durability, the button facing is reinforced with ribbed tape. The hood is worked with buttoned umbrella, a concealed drawstring at waist height allows a width adjustment. The cotton used comes from controlled organic cultivation.

EtaProof® is a breathable cotton fabric from the Zurich weaving mill Stotz, which keeps you dry according to the protective principle of umbrella silk when the rain is not pouring down from the sky in torrents. The moderately wax-based impregnated fabric is so tightly woven that the fibers swell on contact with moisture and water droplets roll off the surface. As a natural fiber, EtaProof® naturally cannot and will not compete with synthetic fabrics. With intensive use, the light natural color of cotton can therefore emerge - this is even desired by many customers, similar to the Used look that jeans develop over time.