Nike is the largest seller of athletic footwear and apparel in the world. It designs, develops, and markets footwear, apparel, equipment, and accessories. While most of its manufacturing occurs outside the US, Nike focuses on product design, marketing, and technology development. It has strong brand recognition due to its marketing strategies and endorsement deals with famous athletes. However, Nike faces competition from companies like Adidas and needs to adapt its brand positioning to attract more casual consumers.