???Safe & Environmentally Materials?Environmentally friendly polyurethane one-piece injection molding, 100% foam, consistent roundness, density and bounce height. | ???2023 Newest Silent Basketball?New foaming technology, one-piece molding, no inflatable sphere, countless fine and small holes are filled with air, and the air is discharged by squeezing the sphere to improve the elasticity. | ???Foam Basketball?Countless tiny holes that absorb the sound coming in, the sound is gradually consumed in the left and right collisions inside, and plays a role in sound absorption, they are very light, and won't really knock things over or cause any damage during the game. | ???Porous sound absorption function?Children's foam balls as weak as 2 decibels of porous sound absorption are equipped with a quiet rebound function and allow you to dribble the ball at home without disturbing people. | ???Stay active for children ? Sponge balls for kids keep your children active and healthy, which keeps your children away from mobile phones, tablets and other electronic devices for hours and ensures that your children stay active and healthy for hours.