Tinker Hatfield (Nike’s Vice President of Design and Special Projects) has designed many of Nike’s most important and industry-changing shoes. After observing athletes change into different footwear for running and weightlifting, Hatfield designed the Air Trainer 1, Nike’s first cross-trainer, which combines features to fit the needs of multiple sports, like running, basketball, and weightlifting. It proved to be phenomenally popular and created an entirely new category of sneaker design.