Wilson NBA Authentic Series Indoor-Outdoor Ball Properties: This model is designed specifically for both indoor and outdoor play. This Wilson basketball is made of the highest quality composite leather, reinforced with an additional nylon cover, significantly increasing its durability and abrasion resistance, especially during intense outdoor play. It can be successfully used on tartan courts, asphalt courts, or cobblestone courts. This is Wilson's most popular basketball model and the most popular choice among amateur players.