The NO.5 21cm Silent Basketball is a soft foam ball designed for quiet indoor play, making it ideal for kids and training use. Measuring approximately 8.2 inches (21cm), it allows for noise-free dribbling and safe gameplay on indoor surfaces.

Made from durable polyurethane foam and covered with a breathable mesh cloth layer, it provides a realistic basketball feel while reducing impact noise. Often marketed as a “silent,” “noiseless,” or training basketball, it is perfect for home use, schools, or practice sessions.