The Falke RU4 is a high performance running sock. The sock is lined with terry cloth from the heel to the toe, for optimal shock and moisture absorption. In addition to cotton, polypropylene has been used. This is a smooth fiber that does not absorb moisture, is strong and gives little friction to the foot, which prevents irritation of the skin.

Falke RU4 Cushion

The Ergonomic Sport System, to which the RU4 belongs, distinguishes between women's and men's socks. These socks are mainly used for running. The RU4 meets all requirements with regard to a cushioning function and dynamic stability, and is therefore a widely sold running sock. The 'cushion' system provides extra cushioning.