The Diadem Premier 40 Outdoor Pickleballs are designed for optimal performance and durability. Made with high-quality PET plastic, these balls offer a true bounce and long-lasting durability. They are ideal for training and can last up to 3 times longer than competitor balls. The neon yellow color provides easy visibility, making them perfect for outdoor play. These balls are available in sets of 3, 12, and 50. Please note that these balls are not USAP approved and are intended for training purposes only.