The edge treatments on the Original Air Jordan 1, Retro Air Jordan 1, and Nike ID Air Jordan 1 are all distinct. These three Nike Air Jordan 1 models all have the same material edge treatments: raw cut, rolled, or turned out seam. The retro model adds a white leather upper to the original black leather design. The ID version of the shoe was introduced in 2004 and has a unique rubber edge treatment on the heel that can be identified by the "Nike" logo on the bottom of the shoe. This model is only available in white/black-based colorways. The Air Jordan 1 has been released in several styles over the years including men's and women's shoes, kids' sizes, and even unisex designs. All feature the same basic design but with different materials used for the upper construction. Each release also includes elements such as color variations, changes to the lace system, and other adjustments made by Nike designers working with Michael Jordan and his team. For example, the Air Jordan 1 was first released in 1989 and came in white/black-based colorways with black laces and red accents on the tongue and midsole. In 1990, the model was released with a blue and black-based colorway and silver accents instead.