A set of 24 vibrant yellow sponge balls for tennis. A mix of Mizuno and Dunlop brands, but there is little difference between the manufacturers. Both are approximately 7cm in diameter and weigh about 15g. Used for tennis indoors for about 2-3 hours, so there is no significant damage or deformation, but there is some variation in softness. Ideal for children's tennis practice, baseball toss batting, various games for young children, and functional training for the elderly. It is also possible to increase or decrease the quantity. Please contact us. Thank you for viewing.