Perfect your tennis game with these specially designed low compression training balls! This bulk pack of 30 balls features a 50% reduced compression core that makes them fly 50% slower than standard tennis balls - ideal for beginners learning proper form and experienced players refining their techniques. The bright yellow and red felt surface provides excellent visibility on court and helps distinguish them from regular balls. Made from natural rubber and durable felt material, these balls maintain consistent bounce and performance even with regular use. They work great with tennis ball machines and are perfect for coaching sessions, self-practice, family matches, or even playing fetch with your dog (they love them too!). Each ball measures approximately 2.56 inches (6.5cm) in diameter - standard tennis ball size but with beginner-friendly performance. Whether you're a coach stocking up or a parent supporting a young player's development, these balls make training more effective and enjoyable!