OTCF SA is a Polish company founded in 1995 by Igor Klaja. It combines sports competences and technologies with the world of fashion and style. It specializes in designing, manufacturing and selling sportswear, footwear and accessories dedicated to professional athletes and amateurs. It sells in 42 countries around the world, including Romania, Qatar, Great Britain, Germany, Singapore, the USA and Australia.

The leading brand in the company's portfolio is 4F, offering high-quality casual and sportswear and sports accessories.