Balls for Ball Pool (500 Balls) are made of non-toxic and biteable PE material, and has the perfect size for children, preventing suffocation by accidental swallowing. These balls are available in different colours, which are used by kids for playing scrolling games, colour counting and shaping games to effectively improve their colour perception and computing skills. Balls for Ball Pool (500 Balls) are treated with advanced technology and can withstand more than 150 pounds of pressure for durability. They won't puncture when a child jumps on a pile, but are soft enough to not hurt even when used roughly. With a sturdy mesh bag, it is easy to store and easy to carry.