4F is a popular Polish sportswear brand owned by OTCF S.A., known for designing and selling high-quality, technologically advanced clothing, footwear, and accessories for sports (like skiing, running, cycling, fitness) and casual wear, emphasizing modern design, quality, and supporting athletes and national teams, including major Polish Olympic and Paralympic committees. Founded in 2003, 4F has expanded across Europe and sponsors various sports organizations, acting as a technical partner for Polish national teams and leagues, with a strong focus on active lifestyles.