- Foam balls designed for quiet pickleball or tennis practice - Ideal for practicing strokes indoors without causing damage or noise - Simulates the bounce of a tennis or pickleball for realistic training - Suitable for both pickleball and tennis practice, as well as fun gifts for parties - Each foam weighs 20 grams and has a diameter of 72mm - Comes in a reusable mesh carry bag, containing 12 foam balls for convenience and easy storage.